It'd be cool to see Bon Jovi, but I doubt it. He'll be in the midst of a big tour come Feb. 2010.
THOUGH, February 19th he is in Seattle, and doesn't perform again until the 22nd. And, Vancouver is the only major Canadian city that he has left out of his announced tour.
Toronto, Montreal, Edmonton, Calgary.... no Vancouver
I wouldn't object to seeing Celine, it seems likely now that she announced she's not actually pregnant...