The Insider.com

Everyone from The Jonas Brothers to Kristen Bell has partnered up with DoSomething.org since Andrew Shue (yes, Billy from Melrose Place) founded it in 1993. And now, the organization -- that strives to create a culture of volunteerism and activism through social change among young people -- can add two more names to its celebrity friends list: Justin Long and Glee's Harry Shum, Jr.

• November 30, 2011Inside Donald & Eric's World Atop Trump Tower
• November 30, 2011What?! Courtney Love is Lilo 's Sober Coach
• November 30, 2011Hanson Launching Beer Line, MMMHop
• November 30, 2011Ali Lohan Laughs off Plastic Surgery Rumors
• November 30, 2011Preggo Beyonce Craves Hot Sauce and Bananas?
• November 30, 2011Kourtney Kardashian is Pregnant!

Over the weekend, both boys participated by surprising two lucky high school students -- Justin went to Poly Prep Country Day School in Brooklyn, NY to pick up Alexandra Capellini in front of 500 of her fellow classmates. After the big reveal, Justin took Alexandra to Woodruff Family Residents to talk to youth at the local homeless shelter and donated jeans.

For his part, Harry knocked on the door of self-proclaimed Gleek Jennifer Ascencio. Once the shock wore off, they visited Leffingwell Manor to share their tech know-how with seniors in their community. And as you can see in this exclusive picture, smiles were free that day!

To find out how you can Do Something(dot org), click here!