Earlier this week, Chris Fedak spilled many details on the half season ahead for this NBC hit. Visit our Chuck spoilers section for the latest scoop from this co-creator.

Now, TV Line is here to fill in a couple of tidbits:

1. Lou Diamond Phillips will portray a villain on the episode "Chuck vs. The Cat Squad," which ought to air in February.
2. Jeffster will return on January 17 and cover Whitesnake’s “Is This Love.”

Might the latter be the "most outrageous" performance to which Fedak refers in the aforementioned interview? We'll certainly tune in to find out.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.