The inventor of this head-pounding "alarm clock" is admittedly a bit quirky ("Hi Mum!" cliche, check!), but I'll be damned if I don't give him kudos for inventing the most violent, aggressive alarm clock I've ever seen.
Sadly, the source site doesn't allow embedding, so I've assembled a series of screen grabs to try and capture the raw violence I saw in the original video. The same video, coincidentally, you can catch in the accompanying link. [TechEblog]