Forget about the boob tube. Places to watch TV on the Internet are proliferating, from NBC Universal and News Corp.’s Hulu to Joost — a site that plans to relaunch Tuesday to make it a more interactive experience. Joost’s relaunch, which will let users watch shows like “Friends” or “The Daily Show” directly on the Web, comes as YouTube also is beginning to offer full-length, commercial-supported television shows in addition to the shorter clips it’s best known for. Previously, Joost users had to download the site’s free software to be able to watch its programming.