After submitting to several anthologies early in the year, I hadn’t seen any suitable markets lately. Not for what I’m writing anyway.
This list makes me wish I wrote short teen science fiction or fantasy. Check out this listing of speculative fiction for teens and adults. The pay may not be great, but anthologies are a good way to get your work out there for both readers and editors to see (think publishing credits, people).
There are currently 35 markets listed here and the list was updated 6/27/09 — yesterday. Happy submitting and good luck!