Actually most of the Tolkien names (as well as Star Trek) are in the standard list of passwords that crackers use to break into boxes. As Rolf mentioned, those names are generally not seen in the best of light when used in a computing/information technology context.
That said, my vote would go to the megababe Arwen, and not to some bearded geezer in a floppy hat. Besides that, Gandalf Technologies was a Canadian ISDN modem company that flamed out in the mid 1990s. Might be bad karma.
