Sony (NYSE: SNE) had a great weekend at the domestic box office. According to Boxofficemojo, two of the company's film products, Paul Blart: Mall Cop and Underworld: Rise of the Lycans, came in first and second, respectively, on the movie charts. This is the second weekend in a row at the top for Blart, and early estimates available at the time of this writing credit the comedy with $21.5 million for the three-day period. Underworld so far seems to have about $20.5 million in the bank, but whereas these are estimates, the numbers and rankings could change.

You've got to praise Sony for the marketing campaigns behind both features. The fact that Underworld virtually made as much as the more accessible comedy is pretty impressive to me. Those Underworld commercials were on all the right channels, and I bet they hit the demo that's still riding high from the success of Summit Entertainment's Twilight perfectly (in case you're not familiar, both pictures feature vampires). Twilight has so far grossed well over $180 million.

Time Warner's (NYSE: TWX) Gran Torino came in third, and Viacom's (NYSE: VIA) modest performer, Hotel for Dogs, was fourth. That latter picture has barked up (it's a tradition in the trade to use goofy puns when covering box-office results, sorry) a total of approximately $37 million at this point. Not too great, to be honest. But News Corp.s (NYSE: NWS) Slumdog Millionaire is moving up in the ranks thanks to the Oscar nominations surrounding it and a wider release pattern. It increased in rank to fifth place and has achieved a total tally of $56 million. Look for this one to hit $100 million.