This list was culled from MLBTR. Their ages are (in parentheses).
Starting pitchers
Brandon Backe (32)
Cha Seung Baek (30)
Kris Benson (34)
Paul Byrd (39)
Bartolo Colon (37)
Adam Eaton (32)
Mike Hampton (37)
Braden Looper (35) - Type B, not offered arb
Noah Lowry (29)
Pedro Martinez (38)
Eric Milton (34)
Odalis Perez (33)
Sidney Ponson (33)
Mark Prior (29)
Jason Schmidt (37)
John Smoltz (43)
Jarrod Washburn (35)
My question: Would you sign any of them?