I love the fact that Carl Williams was murdered with an exercise bike. I thought you could only use exercise bikes in one way, but no. I reckon it would of used up a fair few calories to beat the shit out of someone with a heavy piece of equipment. It probably also gave more of a whole body workout. I guess the only problem is that the exercise bike is then likely to be taken away as evidence. They are probably unlikely to buy a replacement one either so you'd probably have to start murdering with the treadmill which would be way more awkward.
I'd like to see a new version of Cluedo where an exercise bike is one of the potential murder weapons.