I just checked out a few odd jobs on rentacoder.com. While there, I did a search on "adult", and got back a surprising amount of results.
The bids range from banner creation, to SEO work, to complete adult paysite creation.
Pretty hot..
One type of job I saw a lot of was getting links to your site for PR. Several people payed $50.00 for 100 incoming links, and the buyers were happy about the work done.
There are people looking for writers - everything from adult stories to tech documents. Lots of graphic design ads, PHP code, etc..
Lots of jobs there go really cheap, but some are definately worthwhile.
http://www.rentacoder.com
(the site is up and down at the moment - they are patching their servers tonight).
It's worthwhile to bookmark if you need something done quickly, or need a quick job to help buy the beer.