Do you sometimes find yourself reaching for a nonexistent remote when you miss something a DJ says on the radio, wanting to rewind the broadcast just like you do with your cable-box DVR? Although satellite-radio customers have had this TiVo-like functionality for a while, Griffin's Shark2 is one of the few products that brings it to regular AM/FM broadcasts.
An upgrade of the original Shark, the Shark2 uses your PC's hard drive to save radio programs as digital audio files that you can mix into your iTunes playlists. It's constantly buffering the stream, so pausing live broadcasts is no problem, and you can set up timer recordings, too. All it needs is a software install and a USB port — and a place on your desk to prominently display that cool-looking fin antenna. The Shark2 costs just $50 and is compatible with Macs and PCs, even ones running Vista! If that's not reason to upgrade from XP, I don't know what is.