'Supernatural' time travels, Sam keeps up with Justin Timberlake's style choices

We've been looking forward to this week's episode of "Supernatural" for a while now. Not only does it include time travel, which is always compelling, but we've also got two major guest stars coming in. "Veronica Mars" favorite Jason Dohring plays the God of Time (and it's about time he play a god) while "X-Files" star Nicholas Lea plays the famous G-man Eliot Ness.

We'll have to wait a couple more days for a sneak peek at their performances, though, because The CW's webclip of the episode this week features Sam (Jared Padalecki) and Dean (Jensen Ackles) grilling a rather unreliable witness.

By unreliable, we meant stoned. In case you were wondering.

We're pretty sure that our favorite part of this entire clip is that Sam knows Justin Timberlake's hat preferences. It's such a relief that in between all the grave-digging and crying at rest stops and drawing salt circles, the boys have time to catch up on Us Weekly.

Catch the clip below, and don't forget to check out our interview with executive producer Sera Gamble -- she gives us tons of scoop about what's coming up next on the show, including some more brain-scrambling for Sam, and unicorns. Yes, unicorns.

Tune in on Friday, January 13 at 9 p.m. EST.