Possible Ideas (copied from other Knotties, with additions by myself and FI):
Love songs - may be used during ceremony or reception (good place for older generation-approved music):
All I Want Is You - Barry Louis Parker (Juno soundtrack)
Looks Like We Made It - Barry Manilow
You're The First, The Last, My Everything - Barry White
All You Need Is Love - the Beatles
For You Blues - the Beatles
By My Side - Ben Harper
(I've Had) The Time of My Life - Bill Medley & Jennifer Warnes (Dirty Dancing soundtrack)
More Than A Feeling - Boston
This Years Love - David Gray
Wonderful Tonight - Eric Clapton
Time of Your Life - Green Day (to be played near the end)
Hallelujah - Jeff Buckley
Open Arms - Journey
In Your Eyes - Peter Gabriel
Love You Till The End - The Pogues
I'll Stand By You - the Pretenders
Love Is All Around - The Troggs
All I Want Is You - U2
Precious Love - Van Morrison
Someone Like You - Van Morrison
Slower dance music:
Chantilly Lace - Big Bopper
The Twist - Chubby Checker
What a Wonderful World - Eva Cassidy
Somewhere Over The Rainbow - Israel Kamakawiwo'ole
Father and Daughter - Paul Simon
You've Got a Friend in Me - Randy Newman
Party music:
2 of America's Most Wanted - 2Pac
In Da Club - 50 Cent
Da Dip - 69 Boys
Dancing Queen – ABBA
Take A Chance On Me – ABBA
You Shook Me All Night Long – ACDC
Wake Up - the Arcade Fire
Sugar Sugar - The Archies
Jai Ho - A.R. Rahman (Slumdog Millionaire soundtrack)
Friends - Band of Skulls
Brass Monkey - Beastie Boys
Hey Ladies - Beastie Boys
Jive Talkin' - Bee Gees
Stayin' Alive - Bee Gees
Steal My Kisses - Ben Harper
Single Ladies (Put A Ring On It) - Beyonce (Bouquet toss)
White Wedding - Billy Idol
Just A Friend - Biz Markie
Boom Boom Pow - Black Eyed Peas
I Gotta Feeling - Black Eyed Peas
Heart of Glass – Blondie
One Way or Another - Blondie
Bad Touch - Bloodhound Gang
Livin' on a Prayer - Bon Jovi
Total Eclipse of the Heart - Bonnie Tyler
If You Seek Amy - Britney Spears
Toxic - Britney Spears
Womanizer - Britney Spears
The Distance - Cake
Just What I Needed - The Cars
Forever - Chris Brown
Friday I'm In Love - the Cure
Fame - David Bowie
Pour Some Sugar On Me - Def Leppard
Me Myself and I - De La Soul
Upside Down - Diana Ross
Nothin But a G Thang - Dr. Dre
Party Up In Here - DMX
Hot Stuff - Donna Summer
Best I Ever Had - Drake
Rio - Duran Duran
All Shook Up - Elvis Presley
Calabria 2007 – Enur
American Boy - Estelle
Let Me Blow Ya Mind - Eve
Build Me Up Buttercup - The Foundations
Killing Me Softly - Fugees
I Got Friends in Low Places - Garth Brooks
Crazy - Gnarls Barkley
Bamboleo - Gypsy Kings
Banana Boat Song (Day-O) - Harry Belafonte
Now That We Found Love - Heavy D
Jump Around - House of Pain
Summer Romance - Incubus
Bad Things - Jace Everett (from the TrueBlood soundtrack)
Better Together - Jack Johnson
ABC - Jackson 5
Nasty - Janet Jackson
I'm Yours - Jason Mraz
Beware - Punjabi MC (Jay-Z remix)
Big Pimpin' - Jay-Z and UGK
Can I Get A... - Jay-Z
Hard Knock Life - Jay-Z
Ring of Fire - Johnny Cash
Don't Stop Believin' – Journey
Quality Control - Jurassic 5
Back That Ass Up – Juvenile
Gold Digger - Kanye West
Good Life - Kanye West
Heartless - Kanye West
Love Locked Down - Kanye West
Pursuit of Happiness - Kid Cudi
Sex On Fire - Kings of Leon
Beautiful, Dirty, Rich - Lady Gaga
Eh, Eh (Nothing Else I Can Say) - Lady Gaga
Just Dance - Lady Gaga
LoveGame - Lady Gaga
Poker Face - Lady Gaga
Lightning Crashes - Live (a personal all time favorite, probably will play near the end)
I'm In Miami Bitch - LMFAO
Sweet Home Alabama - Lynyrd Skynyrd
Cherish - Madonna
Like a Virgin - Madonna
Ain't No Mountain High Enough - Marvin Gaye
Can't Touch This - MC Hammer
Paper Planes - M.I.A.
Say Hey (I Love You) - Michael Franti
Don't Stop 'Til You Get Enough - Michael Jackson
P.Y.T. - Michael Jackson
Float On - Modest Mouse
Sweet Caroline - Neil Diamond
Sexy Love - Ne-Yo
Hellagood - No Doubt
Crazy Game of Poker - OAR
Get Your Money - ODB
Shout - Ottis Day & the Knights
ATLiens - Outkast
B.O.B. – Outkast
Hey Ya – Outkast
Rosa Parks – Outkast
Peaches - Presidents of the United States of America
Baby I Love Your Way - Peter Frampton
Bohemian Rhapsody - Queen
Cotton Eye Joe - Rednex
It's The End Of The World - R.E.M. (Garter toss)
Super Freak - Rick James
Jesse's Girl – Rick Springfield
It Takes Two - Rob Base & DJ EZ Rock
Joy & Pain - Rob Base & DJ EZ Rock
Gringo Honeymoon - Robert Earl Keen
The Seed (2.0) - The Roots f/ Cody Chestnut
Escape (Pina Colada song) - Rupert Holmes
Push It - Salt-n-Pepa
I Want You - Savage Garden
Beautiful Girls - Sean Kingston
Baby Got Back - Sir Mix-a-Lot
Gin and Juice - Snoop Dogg
Who Am I (What's My Name)? - Snoop Dogg
The Underdog – Spoon
Galway Girl - Steve Earle
Rockin Me - Steve Miller Band
The Joker - Steve Miller Band
Superstition - Stevie Wonder
DJs - Sublime
What I Got - Sublime
Baby Love - Supremes
My Girl - The Temptations
Semi Charmed Life - Third Eye Blind
That's Not My Name - the Ting Tings
Mary Jane's Last Dance - Tom Petty
You Don't Know How It Feels - Tom Petty
Wild Thing - Tone Loc
Africa - Toto
Burn - Usher
Ice Ice Baby - Vanilla Ice
Gravel Pit - Wu Tang
METHOD Man - Wu Tang
Protect Ya Neck - Wu Tang
Georgia Dome - Ying Yang Twins (hopefully edited)

Not yet categorized/Completely random:
Someone to Watch Over Me - Ella Fitzgerald
Fly Me to the Moon - Frank Sintra
Dayman - It's Always Sunny in Philadelphia
Come Around - Marc Broussard
For Once in My Life - Tony Bennett and Stevie Wonder
It Had To Be You - Tony Bennett
The Way You Look Tonight - Tony Bennett