• Baldwin, Alec actor source: veganissimo [peta]
• Alec Baldwin is a vegan and plays a very active role in advocating animal rights through PETA. - Jessie, AZ
  

but...

• He told Howard Lyman & I several years ago that he still eats fish & some dairy/eggs. - Marr, LA
  

maybe he improved...?

• source: t.v. - on an old saturday night live, he wore a shirt that had a giant stop sign on the from with "eating animals" on it. on the back, it said "go vegetarian". he wore this at the end when they all gather on stage, and he kept turning around so that it would be seen. also, the show featured a skit that was very critical of chicken farms.
• source: http://www.peta.org/feat/sexyveg05/