I'm coming in late on this conversation, but I want to share that I'm also a big fan of the "28" franchise. As good as the first movie is, I had a problem buying that skinny Jim could overcome trained soldiers. I also had a problem with the soldiers being so threateningly horny, after only 28 fricken days! To me, the strongest point of the movie was the beginning, where the streets are deserted.
28 WEEKS LATER (the sequel) does not "pale," in my opinion! I like it a tad better than the original movie. I really liked Jeremy (THE HURT LOCKER, THE TOWN) Renner's sniper character:
I thought John Murphy's music was much better on the sequel (to the point that they used it for AVATAR previews). My opinions are really slanted by a movie's score and this was a good one. The helicopter blades hitting the infected (not zombies) and Robert Carlyle's emotional running scene (abandoning his wife) really stuck out for me. I preferred the way the military was portrayed in this one, too.
Last, but not least - the original 28 DAYS LATER was shot with Canon XL-1 video cameras, which started all sorts of discussion on all the indie forums. It looks good on TV, but was very fuzzy in the theater. I very much appreciated how slick 28 WEEKS LATER looked, by comparison.
Danny Boyle is a fricken genius! I absolutely loved SHALLOW GRAVE. SUNSHINE was brilliant in its own way. The man can cross genres and draw you into whatever he touches.
As for Hitchcock, I love this man's work! I was lucky enough to see several of his movies in big screen rerelease - ROPE, VERTIGO, REAR WINDOW, NORTH BY NORTHWEST and PSYCHO. The sexual tension between characters and suspense really hold up well. The man was ahead of his time.
I've often listed Hitchcock among my 3 most influential directors, along with James Cameron and John Carpenter.