The songs I would like him to sing are:
I'm Partial To Your Abracadbra, the Ian Dury & The Blockheads number that Paul did for the Ian Dury tribute album. Paul's vocal on this is EXCELLENT, and the song seems ideal for half-time at the footy: raunchy and loud.
Then (seriously), Mary Had A Little Lamb. I would bet that he could have the whole stadium singing along. After all, he would have them eating out of the palm of his hand after Abracadabra so they would do anything.