Sparrow - Tweetie-like Gmail client for Mac

I can't wait to get 2.0 from MacHeist, only to have the developer get bought out by Google and then for all development on the app to cease.

In reality, I think it's an interesting idea, although it feels a little slow for me (expected for a beta) and it appears to never stop syncing. I'm sure a lot of people will be complaining about the lack of Gmail keyboard shortcuts (c'mon, Cmd+Shift+A for archive?).