CaveMum - yes I quite like that BC has been 'on the cusp' of fame for years, but not quite had worldwide scrutiny up until now, enabling him to go off and do little independent films, TV, theatre etc.
I think the US are about to discover him though, like others have mentioned. Sherlock Series 2 goes on general release across US, in May (as far as I know) - I reckon they'll fall in love with him then too - how can they resist?!
Then it will be followed up with Star Trek 2, and The Hobbit - I think the rest of 2012 and 2013 will bring worldwide fame (if they can get over the name, and the unusual, non american apple pie looks). It wouldn't surprise me if he was presenting an Oscar next year (if not acquiring one himself!...Someday). Kind of sad if it happens - the 'losing' him to Hollywood bit, but at the same time he deserves every success.
He's always said that he would like to keep doing a mixture of film, theatre and TV, that it's the variety of work he enjoys, so hopefully he'll use the big bucks films to enable him to keep doing the other, smaller projects too. Atm at least, he does seem quite grounded and not into fame for fame's sake, but as a vehicle to enable him to get the variety - and from his past choices, we know he's not just paying lip service, he means it. He's a bright bloke, and also with his parents being actors themselves, and sort of knowing the perils and pitfalls, hopefully he'll be able to steer a steady course through the madness of fame!
SeaShells - Found the clip. The bit with him sat with his shirt off and his tanned chest on display at 3.13-3.34mins - he could have been reading the Yellow Pages for all I knew. How do they expect anyone to concentrate on the reviews??
Seraphine - I think he might be due to start filming 'Phoenix' in the spring? It's set in the US (clue being in the title, where they travel 4000miles to) so...hmmm...maybe we can play Seraphine-spotting in a new 'Pop Candies' vid on youtube then! 
Kids soundly asleep, DP has fallen asleep too. Seems an odd choice but I'm going to check out the Miss Marple episode of the dreamy montage posted earler, .