This is the latest installment in a new series where the HuffPost Teen editors round up five things they're excited about each week -- from new video games, to books, to viral videos, to entertainment news. Check out this week's picks in the slideshow below, and email or tweet @HuffPostTeen with your suggestions!

This week, we're obsessed with the hilarious new novel "Penelope," a satire of the social heirarchies at an Ivy League university, and we also (weirdly) can't get enough of the crazy Ke$ha/Beatles mash-up "Tik Tok Together." Honorable mention goes to this video of Florence + The Machine giving a totally stellar performance at Lollapalooza.

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  • This Book

    One of most laugh-out-loud funny descriptions of college life we've ever read, <em>Penelope</em> follows the adventures and misadventures of Penelope O'Shaunessy, a uniquely awkward freshman navigating her first year at Harvard. <a href="" target="_hplink"><em>Booklist</em> calls the novel</a>, written by HuffPost College editor Rebecca Harrington, a "clever parody of Harvard pretentiousness."

  • This Mash-Up

    In the most unlikely mash-up combination since <a href="" target="_hplink">Pokemon and Adele,</a> the musical stylings of Ke$ha and The Beatles have joined forces in <a href="" target="_hplink">"Tik Tok Together."</a> Don't knock it until you listen to it!

  • These Doodles

    It just isn't a holiday or a special occasion unless there's a Google doodle to go along with it, and we're loving the search engine's <a href="" target="_hplink">2012 London Olympics cartoons</a>. Check out today's doodle, which lets you use your keyboard to play the hurdler.

  • This Letter

    A recently-unearthed historical document reveals that it was no teenage girl on instant messenger who coined the term "OMG." In fact, its <a href="" target="_hplink">first known use</a> was in a 1917 letter from Lord Fisher to Winston Churchill.

  • This Merch

    <em>Hunger Games</em> fans counting down the days until the DVD/Blu-Ray release on August 21, Target is unrolling a line of <a href="" target="_hplink">limited-edition, upscale HG merchandise</a>. And it won't come cheap -- a solid gold Mockingjay pin modeled exactly after the one Katniss wears in the film retails at $999.