'SNL' PROMOS: Melissa McCarthy and Kenan Thompson Imagine Dragons

Melissa McCarthy will host Saturday Night Live for her third time this weekend, making it the third consecutive season that the Mike and Molly star has graced the SNL stage. When McCarthy first hosted during Season 37, she was one of that season's top hosts. She was original and extremely funny. McCarthy's encore during last season didn't quite live up to her debut. Like most of her movies now, SNL boxed McCarthy in as a someone who should be loudly obnoxious and just fall down a lot, forgetting that she rocketed to fame with a nuanced performance in Bridesmaids.

Hopefully McCarthy finds the magic that made her so successful the first time she hosted when she returns this weekend. NBC released a series of promos for this weekend's episode on Wednesday, pairing McCarthy with Kenan Thompson. Nothing really amazing in these promos — the duo sings a song about imagining dragons (a play on the name of this weekend's musical guest) and McCarthy sucker punches Thompson at one point.

These promos fail to mention that this weekend's episode is Seth Meyers final SNL, which should lead to some pretty key moments beyond whatever McCarthy winds up doing. Will Stefon come back to say goodbye to his "Weekend Update" buddy?