I'm really looking forward to this year's SXSW – they have a strong program this year and it's always fun to meet the filmmakers and tech types who come into Austin for this surreal celebration of entertainment, music, and technology.
If you're planning to attend SXSW interactive but think you might want to dip your toe into the waters of the film side of things, Agnes Varnum just posted a great article entitled A Geek's Guide to SXSW Film. (Did you know there are films that your Interactive badge will get you into even if you don't have a Gold or Film Badge? It's true!) Also useful is Jette Kernion's guide to SXSW film venues over at Slackerwood.
And finally, if you're lucky enough to be a filmmaker with a film in the program, here's a series of articles just for you: Last minute filmmaker tips for SXSW.