flickr press (not to be confused with "flickrpress" which is also out of date) doesn't seem to have quite as many features, but plays well with wp 3.04 -- better still, the interface is almost identical to tan tan's plugin. if you're looking for a close match, i don't think you'll find better than this.
- see your sets in wp admin
- albums show up in almost exactly the same way
- no flickr groups
- no lightbox, though it would be easy to add
- no caching, which results in urls are very slightly different
- no flickr comments
at least that's from first glance, i could be wrong about some of this. please let me know if i am!
(yeah, the plugin page could def have more info...)