Mitch Chapman has a couple of posts up describing a new bookmarklet feature coming in VoodooPad 4.1, as well as how he's using it with TextMate:

VoodooPad bookmarklets now support HTML.
VoodooPad and TextMate.

Mitch has a neat workflow with TextMate + VoodooPad.

To use the new bookmarklet feature, you'll have to grab a development build of VoodooPad.