Mariska Hargitay and Chris Meloni, Yvonne Strahovski and Zachary Levi

Law & Order: SVU's Benson and Stabler are the TV duo TVGuide.com users most want to see do it already, according to a TVGuide.com poll. They barely edged out Chuck's Chuck and Sarah.

Check out the 15 couples fans want to see hook up

Benson and Stabler (Mariska Hargitay and Christopher Meloni) garnered 18 percent of the vote to Chuck and Sarah's (Zachary Levi and Yvonne Strahovski) 17 percent. House's Huddy (Hugh Laurie and Lisa Edelstein) is the third couple voters want to see hit the sheets — for real, writers — nabbing 14 percent.

Users said The Big Bang Theory's Penny and Sheldon should be more than just neighbors, as the comedic duo followed with 11 percent. Rounding out the top 5 is Smallville's Chloe and Clark with 9 percent, beating out Lois and Clark, who earned 7 percent.

Be warned! Sneak a peek at TV's unsexiest sex scenes

All of the couples were included in TVGuide.com's photo gallery of couples fans told us they wanted to see hook up. But in our poll, three pairings got little love — from each other or fans. Earning zero percent of the vote were CSI: NY's Mac and Stella (Gary Sinise and Melina Kanakaredes); Ugly Betty's Daniel and Betty (Eric Mabius and America Ferrera); and Lie to Me's Cal and Gillian (Tim Roth and Kelli Williams).