I got the a Corsair 120GB SSD with the intention of installing it inside the Mac. Before doing this, I booted my iMac from the FW800 / SSD inside an Onyx FW800 enclosure. I don't see any reason to open the iMac - Word, Excel, iPhoto, iMovie, iTunes all open up in a single bounce. Lion boots in 20 seconds (core2duo 2.8). I know the benchmarks will show the FW800 bottleneck, but this system is a lot faster with the FW800/SSD combo than it ever was using the internal HD.