I don't think Gil/Sara would work well, either, unless you're into uncommunicative, angsty, and uncomfortable relationships.

My fav. ship in CSI is Gil/Lady Heather. They're compatible, in a very strange way.

Am I very very strange for not seeing any slashy vibes in that show, though? Maybe I've been spoiled with LotR and its incredibly obviously slashiness that I can no longer see the more suble stuff...