Nokia Announces 7710 PDA/GPS/Internet Phone
Try the Sony Ericsson T68i. I purchased one from ebay last year. Its an older phone, but has the "right" feature set for me.
It has bluetooth, no camera, *very* basic pda features -- calander, phonebook, alarms, color screen (not touch, which i prefer, t9 is great!)
I'm very happy with it.
What's more, it's tri-band (eg works in US, europe and most places in the world -- i actually purchased a SIM while in europe and had a "local" number) and it's network unlocked (eg my phone isn't locked to a network provider). I don't use my phone a bunch, so I just purchased a pay-as-you-go SIM from cingular and my average monthly cost is about US$15.
Search on ebay for "Sony Ericsson T68i unlocked"
I purchased mine for about US$100.
One warning however: check the GSM coverage, GSM fequencies, and plans of various providers before commiting to any phone.