Question for the gamers amoung you

[redhedlvr2]

I'll be watching my 7 year old grandson on Thanksgiving day before we go to dinner at my sister's house.  I thought I'd get a PS3 game for us to play.  What sort of stuff is good for that age bracket?  I read somewhere that racing games are good.  He'd like that I think.  More action and less thinky stuff.  Any suggestions would be great!

Thanks in advance