The Best 30 Rock Celebrity Guests

Salma Hayek makes several guest appearances as Elisa, Jack's hot-headed love interest, in a stint of Season 3 episodes. First appearing in "Señor Macho Solo" as a nurse for Jack's mom, the two quickly fall for each other and begin a passionate love affair that quickly evolves into a marriage engagement.

The two aren't the most compatible with each other. She's a down-to-earth, family-oriented, good-hearted Catholic girl with a fiery streak, and he's a cold-blooded, take no prisoners corporate exec with little to no moral compass. However, with a little bit of elbow grease, and a lot of chemistry, they're able to work through those issues. There is one thing, however, that they two can't get past, which eventually splits them up in Hayek's last episode, "The Ones."

In this episode, Elisa reveals a dark secret regarding her last engagement — she killed her ex-fiance because she found out he was cheating on her. It's actually an infamous murder, and it earned her the ominous nickname the Black Widow. She promises that as long as Jack never cheats on her, everything will be fine, but Jack simply can't take the risk, so he's forced to break things off. It's a wild twist, but Hayek pulls it off. It's honestly rare to see someone wear murderer so well.