I would have to say Kim Clijsters! they are good friends and practice together at GS and other big tournaments. Kim is a good double player (see last year with Sugiyama), but unfortunately she has to slow down her shedule and probably won't play any doubles this year.
So Jen, I would say: Pick Dokic, very good doubles player OR Seles (although she can't volley very good with that two-handed fore- and backhand)
A man may fight for many things. His country, his friends, his principles, the glistening ear on the cheek of a golden child. But personally, I'd mud-wrestle my own mother for a ton of cash, an amusing clock and a sack of French porn.