So I'm not really known for staying up with pop culture or television so this is a bit old but I just found it so... yeah. I love the energy and excitement that Kevin Delaney has in this clip giving people a great show revolving around how different gases act. If you haven't seen this I would recommend it, its a lot of fun.
Kevin Delaney Makes a Cloud on the Tonight Show
Kevin Delaney Makes a Cloud on the Tonight Show