Scrubs star Zach Braff has persuaded good friend Colin Farrell to guest-star on my favorite NBC comedy this January. In a story first reported by E! Online (damn you Kristin Veitch!) and later expanded by USA Today (damn you Will Keck!), Farrell will play a hard-partying Irishman (can he pull it off!?) who shakes things up for our friends at Sacred Heart.