I've just soft-launched a .travel: http://cycle.travel/

It's pretty much the only .travel I've ever seen, but the domain was just right for the content; it's memorable; and I figure that in an age where people find stuff via Google and not via an increasing number of obscure TLDs, the old "it must be .com" doesn't apply so much. (Probably the leading cycling site in the UK is road.cc, for "cycling club", and they seem to do fine.)

Yeah, wtf ever happened to .aero!? I see the occasional .info, but wasn't there also supposed to be a .museum?

Hurrah for someone actually doing something with TLDs.