Zach Galifianakis, characteristically disheveled and eccentric, brought his off-kilter sense of humor to this week's episode to strong effect. Hangover compatriots Bradley Cooper and Ed Helms made cameos, as did Jon Hamm and Game of Thrones' Nikolaj Coster-Waldau. Musical guest Of Monsters and Men performed "Little Talks" and "Mountain Sound."

Some highlights...

Cold open—Fox & Friends takes on Jason Collins' big announcement (after which a few fact-checking corrections are in order: "Kentucky Derby losers are not turned into IKEA meatballs... Kevin Costner does not live in Watertown...")

Dragon suit-clad Game of Thrones fanatic Duncan (Zach Galifianakis) struggles on the Game of Game of Thrones game show (featuring an appearance by Nikolaj Coster-Waldau, a.k.a. Game of Thrones's Jaime Lannister).

The monologue—Galifianakis plays piano and delivers absurdist humor.

Technology correspondent Randall Meeks (Fred Armisen) drops by Weekend Update to demonstrate the stylishness and ease of use of Google Glass.

Darrell (Zach Galifianakis) makes a cable access show about having a friend over.

...Payoff is the final, edited version, which aired as the last sketch of the night.

Also: Martha Stewart for Match.com; James Carville (Bill Hader) drops by Weekend Update to comment on Congress's failure to pass expanded background checks; The Girl You Wish You Hadn't Started a Conversation With at a Party returns to Weekend Update; racist M & M store employee Zach Galifianakis attempts to apologize to his coworkers; Commercial—New Balance shoes... made for running, but worn by chubby white guys; and (not currently online) The cast showcases their Jennifer Aniston impressions in the 15th annual Jennifer Aniston lookalike contest (in which Zach Galifianakis unhappily places last, and Bradley Cooper and Ed Helms take top honors).

NEXT, on May 11: Kristin Wiig with musical guest Vampire Weekend.