Tonight marks the 100th episode of Grey's Anatomy. The show celebrates with a major wedding...
- 8:00 p.m. - An appearance by Stewie Griffin on Bones (Fox); Chloe asks Clark to kill Davis Smallville (The CW); Ralph Macchio guest stars on Ugly Betty (ABC); Michael Waltrip guest stars on My Name is Earl (NBC).
- 8:30 p.m. - Leslie's mother is honored on Parks & Recreation (NBC).
- 9:00 p.m. - Jim and Pam discuss a secret trip on The Office (NBC); the 100th episode of Grey's Anatomy (ABC); Sam is locked inside Bobby's panic room on Supernatural (The CW),
- 9:30 p.m. - Jack looks for his real father on 30 Rock (NBC).
- 10:00 p.m. - A criminal exposes himself to Lydia on Southland (NBC).