The Nokia 7650 is excellent, it's not perfect, and I'm told a lot of it's problems are solved in the 3650, and I'm very aware I could have gotten a 3650 as easilly, I didn't for one reason: it's just so damned fugly (IMHO).
Apart from some gripes, such as not being able to use anything other than data connections for bluetooth, and the 4MB limited memory (with no expansion), I find the 7650 kicks arse on just about every other front.
I've even gotten round to reading In the Begining...was the Command Line by Neal Stephenson (a favourite author of mine), as an eBook on the 7650, which I've meant to read for some time.