This seems to be faster than VNCThing, but has a baffling list of things that are just plain missing:
1) No Key commands! Missing Apple-Q, Apple-N, Apple-F (Full screen)
2) Does not remember saved passwords
3) No bookmarks.
Additionally, I had to hunt through newsgroups and turn off ZRLE to get it to connect without error.
Key mapping is a cool idea, but it would be nice to be able to map the Apple key to, well, the Apple key. (A la Virtual PC, VNCThing, etc.)