I know it's not exactly the kind of thing you'd expect on this website, but surfing the internet will, at some point, make you squirm: Comic Sans. Here is a poem I wrote about it.

Microsoft tried to combine a casual operating system for tablets with a normal windows interface. The idea of merging different product types into one powerful device is great. You can use everything from both sides.  Combining the pros and leaving the cons out? No way!