To Blanx - thank you! and yes it's really cute to watch.
I had suspected it was something like that. When we first got Clio, nearly 8 years ago, we lived in a house near a running stream with little waterfalls. She enjoyed playing around it and jumping about the rocks and stones, and no doubt, drinking the water. We had to move to town to a top-floor flat about 5 years ago so she's now an indoor cat. Feel a bit guilty about that but she seems happy enough. She also likes catching drips from a tap with her paws, and dipping her paws in the bathwater, though she's had one fall in and a few near misses.
Where did you buy the drinking fountain, and is it intented for cats?