FrontRow or App like FrontRow on Lion
You can either try to get Front Row running on Lion, or try Plex.


Front Row was discontinued in OS X Lion; that’s probably why you can’t find it. That said, there’s nothing to stop you running it, if you don’t mind a few limitations. Ralph Perdomo has some instructions for Front Row on Lion (http://www.mac-hatter.com/blog/frontrowenablerforlion), although they require you to stay on iTunes 10.3, which doesn’t work with some iOS devices. If you’re really attached to Front Row, this probably works, but I haven’t tried it.
Plex (http://www.plexapp.com/mac.php) also seems pretty decent; I know a lot of people who use it and are very happy with it. Sort of like Front Row, but it pulls content from lots of other places, including iTunes. This support page suggests that they support the Apple Remote, as you wanted. You might like to check that one out.