Jacket is a pretty good journal, more or less in the post-avant neighborhood.
A very good resource, if you're wanting to find a journal from this neck of the aesthetic woods, is the on-line list Spencer Selby keeps, at
http://www.selbyslist.com. Selby updates this list monthly and includes a lot of smaller 'zines and e-zines that are not members of, say, CLMP. There are _link_s to all the journals that do have websites.
If you're interested in experimental/innovative writing--reading it, or submitting your own work--Selby's List is probably the best place to start.
If you care to share, I'll create a category for markets in the "Small Press Directory". Feel free to add any directory or resource you come across.
Let me know what you think of Selby's List. Spencer Selby is also a great experimental poet.