Sant'Eustachio whisking in egg whites for texture and adding sugar to mask the flavor is adorable/enjoyable, but not as, uhh, "coffee" per se.
I didn't know this about the egg whites but I see Sprudge mentions it.
I've been very pleased mail-ordering from George Howell, particularly the beans they "direct trade". Joe Pro occasionally sells George Howell, too.
Swallow Café has Heart.