Seems most of the time VH1 is all reruns of Celebrity Rehab With Dr. Drew or America's Next Top Model. But tonight, thankfully, VH1 returns to its original fodder of music videos, guaranteed to play not only a couple of hours of music but the channel's most 40 top pop videos of 2008. Of course, Beyonce’s “If I Were a Boy” and Mariah Carey’s “Touch My Body” will receive top honors, as will “Womanizer,” Britney’s infamous comeback single. Expect newcomers (with one-name monikers) like Adele, Duffy and Estelle to make the cut, as well as boy bands like the All-American Rejects and New Kids on the Block. But just two artists were lucky enough to get two of their videos ranked in the Top 40. Rihanna’s one — but that’s all for spoilers. Tune in to find out who’s neck in neck with RiRi, and which video is No. 1.