Here is a video which is taken in time lapse (or at least the video is sped up) of a hot air balloon race which happened in Reno recently. There are all kinds of different hot air balloon shapes in the video even though the majority are your regular hot air balloons. To name a few of the irregularly shaped balloons I see a cow, a bee, an engle, Noah's Ark, Jesus, a stage coach, and what looks like a teddy bear. I believe the eagle was actually a spotter balloon as it takes off and lands before the other ones but I really have no idea. I assume a lot of these balloons are corporate sponsored.