The other night over a beer Justin reminded me of another great thing about ReSharper: View a class’s derived types with Ctrl-Alt-B. That’s an awful keystroke combo, but it brings up a great display of everything that derives from your current selection:
Slick for any number of reasons, including the infamous “Now what the h3ll was that type of Exception I was looking for?” case where you can’t remember what you were looking for.
(And don’t forget Joe White’s 31 Days of ReSharper series. It’s on R# 2.5 but is still a great thing for pointing out the many great uses of R#.)