I spotted
Clash of the Titans at Tesco; I've always been a bit of a Harryhausen fan.
Truly, Medusa is probably the finest thing he's ever done, and the latter Kraken isn't too bad either.
On the other hand, a tip for films should always be : don't use a swanee whistle for sound effects, and especially don't attach it to an irritating clockwork owl..
My favourite of his works still remains
The Seventh Voyage of Sinbad - yes, even above
Jason and the Argonauts (where Talos is definitely the best character). I've not seen the other Sinbad films or his really early stuff, though.