I've seen this other places, so I figured it'd be fun to create a list of the music that is played when Mets players come up to bat/in to pitch.

Here's what I know:

Daniel Murphy- What I've Done by Linkin Park , Shipping off to Boston by The Dropkick Murphys, This Town by O.A.R.

J.J. Putz- Thunderstruck by AC/DC

Francisco Rodriguez- Sandungueso by Tego Calderon

Carlos Beltran- El Esta Aqui by David Y Abraham

Johan Santana- Smooth by Carlos Santana

Mike Pelfrey- What I Like About You by The Romantics

John Maine- Seek and Destroy by Metallica

Oliver Perez- I'm Gonna Get You by Bizzare Inc. (according to an online source)

Ryan Church- Crazy Train by Ozzy Osbourne

Jose Reyes- El Mudo by Chacaron (According to an online source)

Wilson Valdez- Rock You Like A Hurricane by The Scorpions

Gary Sheffield- Swagger Like Us Remix by Kanye, Jay-Z et al

Bobby Parnell- 8 Second Ride by Jake Owen

Billy Wagner- Enter Sandman by Metallica

Cory Sullivan- Icky Thump by White Stripes

Nelson Figueroa- Lose Yourself by Eminem

Feel free to add more if you know any I didn't mention