Weak flushes

I was watching some old episodes of Poker After Dark and Doyle bet out a large amount with a weak flush -- like 9 or 10 high. I've also seen in a .25/.50 cent a game a guy bust someone with a 10 high flush.

I know that generally you want an ace high flush in a cash game but what is everyone opinion on weak flushes and how to play them or when one should play them?

Well thats 6-handed, not likely to be up against higher flush. You shouldn't spend alot to draw to them and probably not at all when more than 3 to the flop, but its like any other good/not great hand, valuebet/play with care.