Zimmer is an oft-collaborator of Nolan, having composed the scores for his last three films (Batman Begins and The Dark Knight with James Newton-Howard; Inception by himself)
Well, don't forget THE PRESTIGE, which came between BATMAN BEGINS and THE DARK KNIGHT, and was handled by Nolan's other frequent collaborator, David Julyan (a shame he hasn't been getting more work).
I like Hans Zimmer.
And yet none of the clips you've selected come from the composers work in the 2000s. Was that deliberate or am I reading too much into it?
I can't say I'm excited about this news, personally. Zimmer is as bad as James Horner when it comes to self-plagiarizing, and lately hasn't been all that interesting as a composer.