I just picked up a PK-5 (couldn't find one used, either) and a Korg Triton Rack. Hopefully, I will able to play rudimentary keyboard parts (or any instrument/voice, really) with my feet, and to possibly trigger some samples (like, say the intro to Baba O'Reilly, or Godzilla's "roar"

). In the band that I plan on using this setup, we only have myself and one guitar player, so being able to do some keyboard like fills would be a benefit.
First off, I need to learn how to work these things. If only I could find a resource half as good as TalkBass.com that deals with sequencing/sampling!