I must admit I am started to get tempted (I was very anti Mac), I just find it all very expensive and I am not used to paying for any of my software on Ubuntu. Main reason at home I use it is to keep my eye in as thats what all the servers use at work, also I dual boot Win7 for gaming.
That web server is one of my own so it was really easy for me as well (not quite a point and click job tho as the server doesnt have a GUI), I just did a wget straight to it then did everything on there as I wanted the processing power for the convert then dropped the file into a folder which is open to the web, took less than 1min.
I am really starting to like the Mac hardware and I have been looking at it, but my problem is I like to fiddle and I would end up jail breaking everything which kinda defeats the point!
Thing is I work in IT so I love typing in stuff at the command line it makes me feel big and clever I do now appreciate that Mac's bring computers to the masses like never before. In the past if you converted videos you wore socks and sandles and had a beard