I know this goes mostly to longevity of franchise, but I found it interesting the teams without any recent players. Most "recent" player for a few franchises:
Orioles - Ripken ('01)
A's - Henderson ('03)
Cubs - Sosa ('07)
Pirates - Bonds ('07, but last played for them in '92)
For all the other teams, they at least have one token current player or recent retiree