Little monster's just been and got himself stuck down the back of the corner bookcase

There's not much room there and he's never attempted it before, but this morning he thought he's have a go. He went down head first but of course there wasn't room to turn around or do anything once he'd got himself down there so I've spent the last half hour moving the bookcase out to free him. Not easy as it's full of stuff in cluding my mini hi fi (which is connected to speakers on adjacent bookcase so I can only pull the corner unit out so far without disconnecting it all). After sorting that out he started annoying Jaffa so is now in his first time out of 2008. I guess he's not made any new year's resolutions then!