As several people have pointed out already, Y Ddraig Goch is infinitely cooler than all the other UK flags; and most other flags, for that matter (although I've always liked St Lucia's and Sierra Leone's).
But yeah. I lived eighteen years in one of the other parts of the UK associated with fornicating with sheep (Norfolk), so those jokes got old fast. It consists mainly of Cardiff, Swansea, Anglesey, hills, several defunct coal mines, a steel works or two, and the world's most awesome power station at Dinorwig, which exists solely to power all the kettles that get turned on to make tea when Eastenders finishes.
My dad went there on holiday once. All the locals thought he was Welsh (his name's Bryn - he also looked remarkably like Griff Rhys Jones when he was younger), although he was actually born in Hampshire.
I remember reading TV listings for S4C in my Grandad's Sunday Telegraph. They looked scary. That soap somebody was trying to remember earlier was Pobol Y Cwm; I also recall spotting Newyddion, which by timing I guessed was just their word for the news.
The double-L thing is pronounced somewhere nearer "thl" than the "ql" someone suggested earlier, although "ql" seems to be the vaguely lazy and foreign way to do it (that's how my dad taught me to pronounce Llanfair-etc).
Wales also gave the world Ryan Giggs, who is epic.