Any suggestions of audience participation music for a sporting venue... to get the crowd involved dancing and singing along.
Its an amazing atmosphere to get 15,000 + people involved and chanting a song 
YMCA
Day-O [Banana boat song]
Don't worry be happy
If your happy and you know it....
Manamana [Muppets]
Pushbike song
Yellow submarine
In the Navy
Bob the Builder
etc.............
About the loudest audience participation I've experienced was to The Angel's "Will I ever see your face again". May not be the result you're after though! 
Sit on my face and tell me that you love me.. ditto above 
Freo Dockers song? Amazingly they want to keep it and up to 40k of em sing along at one time. Have to be for a low IQ crowd tho.. oh wait, ur in Adelaide right? (badoom tish!)
If sporting event (it urks me to say but) Queen's we are the champs works.
I used to do the PA at Subi oval and IME the cheesier the better. There is no such thing as cheese overdose for large gatherings. 
Birdy dance
Spaccarena
Eagles theme (might be nice to hear for sake of nostalgia) 
Easybeats - friday on my mind (if on a Friday - der)
Powderfinger - belter
Dandy Warhols - Bohemian like you (woo hoo hoo-oo oo)
Blur - song #2 (woo hoo!)
Don't over think it.
Who's the wanker in the black
Your gunna get your ****ing head kicked in
Your laughin now. I dunno why, coz after this match, yer gunna die
Oooh Arrr Kantana said oooh arr Kantona
Songs my be a bit old. Been a long time since I've been singing at a sports venue
One that was being sung a lot the last few days and had most of the crowd joining in and loving life went like this........
he bowls to the left he bowls to the ri-I-gh. Oh Mitchell Johnson, his bowling is sh#te
!
[}:)] 