I can see why people like to make fun of Keanu Reeves, hell I do it on occasion. But I like watching him in the movies he makes. Sure, he almost always delivers his lines in a monotone voice with a monotone face, but that's become his thing! That's why he gets hired. He's good at what he does, he's even better at it when he's holding a gun. Personally, I'd love to him in a comedy again.
Joeydevilla went ahead and created a chart called: Master Thespian’s versatility through his 2.5 facial expressions, as seen in his many films. Check it out below, and you can click to enlarge.