"Tsunami Aid: A Concert of Hope" airs live on the entire family of NBC networks - NBC, Bravo, USA, MSNBC, Sci Fi, CNBC and Trio - at 8 p.m. next Saturday, January 15th. The show will be broadcast live to the East coast, tape delayed on the West coast with the phone bank staying open throughout the night. The special will also be promoted through the Clear Channel network of radio stations. Additional talent will be announced daily. The American Red Cross' International Response Fund is the beneficiary.
I haven't been able to find anywhere that lists U2 on the lineup.... but considering they're using "Sometimes You Can't Make It On Your Own" over the commercial spots for the NBC concert on BRAVO!, there's a chance that they are. ;)
There are several separate shows - in the US, UK, and Canada - in the works, and there is a rumor that U2 has been asked to play several of them. You can google "NBC tsunami benefit concert" and find all sorts of information about that and the other benefits and charities.