This is surprisingly great for what could have been a complete disaster to reboot! What really stands out is Robert Downey Jr.'s acting, which is hilarious, fascinating, eccentric and witty all at the same time. He is complimented very well by Jude Law, and the chemistry between the two is about as good as it gets. The plot and writing are both markedly above-average for a popcorn flick, with some pretty good intrigue and an ending that successfully wraps up everything with a bit of nostalgia. The action and cinematography are both top-notch and original, and fit surprisingly well with all the Sherlock Holmes detective work.
Definitely one to watch, especially if you're into the whole Poe, macabre 1800s London thing.
In a sentence:
One of the best reboots I've seen so far, with wonderful acting, cinematography, pacing, action and a better-than-expected plot.