The Showtime drama stars Claire Danes and Damian Lewis, and ended its first season last month.
Bell, whose new show House of Lies also airs on the cable network, told The Huffington Post: "I loved it, I loved it. Actually, at our Showtime party, I superfanned a couple of the cast members. I had to tone it down a bit.
"I think it's a really great show. It really keeps me on the edge of my seat."
Bell also revealed her love for Parenthood and Damages, adding: "I was a big fan of Damages when it was on [in the summer], but there's so much good TV. Homeland and Parenthood are the only two we've been obsessed with recently."
The Veronica Mars actress also talked about House of Lies, a comedy about a group of cut-throat management consultants with Don Cheadle, Dawn Olivieri, Ben Schwartz and Josh Lawson.
On what attracted her to the show, Bell explained: "I was looking for something darker in tone - not necessarily raunch or sex, but definitely something more adult or darker in tone. Less safe.
"It's relevant in the current zeitgeist with the whole Occupy movement. All of these characters are wheeling and dealing, showing you the behind-the-scenes dirty business. I think it's attractive, sophisticated filth."
House of Lies premieres on January 8 in the US. Watch the trailer below: