||Ticketbuyers who scurried to see the smash hit Alvin and the Chipmunks two Christmases ago likely will want to double their pleasure with Alvin and the Chipmunks: The Squeakquel, a frenetic but undeniably funny follow-up that offers twice the number of singing-and-dancing rodents in another seamless blend of CGI and live-action elements. The new pic comes off as more specifically kid-centric than its predecessor, but should nonetheless have similarly nostalgic appeal for baby boomers who remember the title characters as '50s novelty-record phenomena, '60s primetime cartoon stars and '80s Saturday morning TV attractions. Theatrical prospects are huge; homevid potential, humongous...Squeakquel picks up more or less where the 2007 "Alvin" left off, with most of the original pic's actors and vocal talents reprising their parts. Chipmunk siblings Alvin (voiced by Justin Long), Simon (Matthew Gray Gubler) and Theodore (Jesse McCartney) continue to be rock-star phenoms under the savvy management and loving guardianship of their adopted human father, Dave Seville (Jason Lee). And Alvin, ever the rambunctious show-off, still grabs the spotlight whenever he can -- even if that means often overshadowing his brothers...Disgraced former record exec Ian Hawk (David Cross) -- who was force-fed just desserts in the previous pic after exploiting the Chipmunks -- sees a chance to jumpstart his stalled career when he's sought out by three naive showbiz hopefuls: Brittany (Christina Applegate), Eleanor (Amy Poehler) and Jeanette (Anna Faris), chipmunk sisters who can sing and dance just as dazzlingly as Alvin and Co...Under the smooth and spirited direction of Betty Thomas ("The Brady Bunch Movie," but, on the other hand, "I Spy"), one thing leads to another in a manner sufficiently zippy to engage small fry with tiny attention spans. Older viewers should be mildly amused, and may enjoy the occasional pop-culture reference -- note the allusions to "Taxi Driver," "The Silence of the Lambs" and a classic '60s hit by the Kinks -- aimed over the heads of the youngsters...Cross once again takes top acting honors with his animated portrayal of the sneaky, snarky Ian. But franchise newcomer Wendie Malick steals her own share of scenes with her stylish turn as a high school principal who's surprisingly appreciative of 'Munk music. Levi tries a tad too hard to convey Toby's lack of social graces, but he makes a sympathetic impression overall.