Ceg, I don't have any scanned images from the 4x5, as a 4x5 film scanner would cost more than my car. Even so, scanning 4x5 film is a bit of a silly thing to do, anyway -- you can get all the quality you need for non-professional digital from 35mm scans. I must say, the print quality is truly exceptional -- I use Ilford Delta Pro 100, processed normally, and produce 11x14s with no hint of grain. If you're into B&W, large format is really the way to go.
Oh -- and slides! There's nothing so cool as a 4x5 transparency! My dad brought his 4x5 to Italy on his last trip. The leaning tower, Rome, etc. on 4x5 transparencies, holy cow! (ahem) Right, yes, but I'm a film-geek.
On scanners, briefly -- I've been using an Acer ScanWit 2720S for quite some time now. It runs about $300ish, and produces (with some effort) pretty good scans. It isn't a $10000 machine, but there's a pretty big chasm between the "coupla-hundred" class machines and the multi-thousand class machines.
Anyhow, I'd love to get into medium format. I don't know that a Hassy is in my reach right now (just rebuilt tranny, ouch), but that seems like it'd be ideal -- a good compromise between the convenience of 35mm and the Big Negatives of 4x5.
Dan