This is the all time leaderboard for hitting Derek Jeter with pitches:
John Lackey - 4
Mike Timlin - 3
Dustin McGowan - 3
Daisuke Matsuzaka, Matt Clement, Bronson Arroyo, Casey Fossum, Rich Garces, Kevin Appier, Denny Bautista, Erik Bedard, Chris Carpenter, Scott Downs, Kelvim Escobar, Chuck Finley, Danny Haren, Scott Kazmir, Rodrigo Lopez, Chuck McElroy, Aaron Myette, Joel Pineiro, David Riske - 2
Lackey hasn't hit anyone else more than twice, though he did become the Angels franchise leader in career plunks last season, with 73 - passing Chuck Finley.
I'm sure that's not the only reason for the signing though.