Since not too long ago I am the owner of a Canon 5D (the original). Second-hand, but it's basically like new. Actually it feels very very familiar to me, since I am used to the Canon 30D already.
However, a new toy is always fun ;-) and the bright viewfinder and low noise are a real improvement.
My Canon EF 28/2,8 likes it too (as do the manual lenses). The old Canon EF 24-85 and 70-210 are not such great combinations, due to heavy vignetting and corner softness. Fortunately the Canon 30D is great for using tele lenses, so I got that covered as well.
Canon 5D / EF 28/2,8 (very nice combo)
Anyway, expect some more wide angle shots in the future ;-)