 Complete the following phrase:  On December 6, 2005 Late Night with Co OBrien segments began selling on the iTunes Store. Most segments were priced at 1.99, as were most episodes of other shows, with special best-ofs and other longer segments priced at 9.99. In December, 2007 NBC stopped selling all its television shows on iTunes, but the network returned it to iTunes in September 2008 after NBC and Apple worked out a new agreement. The show was offered free at Hulu.com and the NBC website but has been unavailable on the Internet since the 