HOT

Who: Justin Timberlake feat. T. I.

What: “My Love”

Why: Throw together Timbaland’s twisty synthesizers, Justin’s Michael Jackson-worshipped falsetto and a cameo by T.I. and you get one crucially catchy example of the former Mouseketeer’s riskier direction. “My Love” one-ups “SexyBack” and will cement Timberlake as your favorite guilty pleasure.

COLD

Who: Nelly Furtado feat. Timbaland

What: “Promiscuous”

Why: With the cheeky Furtado taking herself super-seriously as a rapper and Timbaland’s goofy accompaniment, “Promiscuous” earned its place in our pop-loving hearts a few months ago as a summer jam. But the weather is getting colder and “Promiscuous” has outlived its stay.