SNL great Kristin Wiig was clearly happy to be back—reprising a series of favorite roles, and occasionally cracking up mid-sketch with former castmates Bill Hader and Fred Armisen. During the monologue, she ventured backstage and discovered Jonah Hill and a very pregnant Maya Rudolph making out in the janitor's closet. The cold open was an odd mashup of the Benghazi hearings and the Jodi Arias trial. Musical Guest Vampire Weekend performed "Diane Young" and "Unbelievers."

Some highlights...

Mother's Day commercial: 1-800-FLOWERS, with Kate McKinnon as Kristin Wiig's mom. ("Gosh, I wish I was a lesbian so I wouldn't have to carry a purse...")

Acupuncturists Kristin Wiig and Aidy Bryant run into trouble with first-time client Jason Sudeikis. (Not for the squeamish...)

Target Lady (Kristin Wiig) is back and more exuberantly weird than ever. ("I like to cut out the models' eyes [from Sassy magazine] and put them on my eyelids so when I sleep my birds don't feel so alone, and ghosts think I'm awake...")

The Disney Channel debuts its new show, Aw, Nuts! Mom's a Korean Water Ghost...

Dooneese (Kristin Wiig), the mutant singing sister from the Finger Lakes, returns to the Lawrence Welk Show.

Also: Perpetually underprepared musical duo Garth and Kat (Fred Armisen and Kristin Wiig) drop by Weekend Update to debut their new Mother's Day songs; and Classy, Sexy, Elegnace—reality TV housewives make a CD...

NEXT, on May 18: Ben Affleck with musical guest Kanye West.