You should check out his other Anglo-accent works CHAPLIN and his brief appearance in Ian McKellen's RICHARD III. Both I recommend, RICHARD III especially I highly suggest.

Yeah I liked SHERLOCK HOLMES too. Maybe too much of the contemporary heavy FX, heavy action theatrical spectacle...but what really works is Downey and Law's chemistry. That real conflicting bromance between two best long-time buddies, so close that outsiders might even call them queer.

A good Guy Ritchie movie isn't necessarily a guarantee, so its nice he didn't shoot himself in the foot here in his comeback. Being free of Madonna helped.