In a nutshell, the least successful amalgam of comedy and drama that I have ever seen.
As a comedy, Steins;Gate ranges tolerable to entertaining, but as a drama, it falls apart completely. Its characters are mostly comical and unbelievable, yet it expects you to take their plights seriously. The grim tale of fighting the inevitable that begins around the midway point is predicated on half a series of the main characters engaging in the kind of stupid and thoughtless behavior that is only acceptable within the context of comedy.
It operates on a kind of dating sim logic where almost all the pivotal characters (themselves shallow dating sim cutouts too; there's the airheaded childhood friend, the redheaded tsundere, the catgirl maid, etcetera) of the story (the scale of which extends far beyond Akihabara where the events of the anime take place) just happen to be teenage girls living within the vicinity of the protagonist, no matter how unlikely. That one of them happens to be the one of the most brilliant researchers in the field of time travel is only the most egregious example I can bring up without getting into spoiler territory.
The opening's good, though.