Before the new sport ident last year, the last new ident was in mid 2003 [vacuum cleaner] -- and before that the awful egg cup and speaker ones, two of the ones they remain bizarrely keen on.
S4C really is a uniquely odd station.
I was going to say, why on earth don't they use all the idents that they have? Why keep repeating the same select few? The latest of the rarely-shown idents that I saw, was around mid-December; a measly 8-second showing of the short version Extinguisher.
It's worth noting though, that *some* of the idents are currently not in use because of the season: Take a look back to the Summer of '05; the Fan ident, and even moreso the Lawnmower, were in far more frequent use; and once the hot weather went away, so did those ID's.
Oh, and I hate Egg now, because of it's overuse. It's not even that great an ident when compared to those before it.
I haven't seen all the idents in sound and motion, but from the ones I have seen, I only really like the Sousaphone and Standpipe ones.
And the new 2006 downtime still: