I like watching the other half of the bus while riding these. It's a cool effect, seeing the whole "room" oscillate through the "doorway", while I feel like I'm standing still.
Edit: The article has a video of this effect near the bottom.
The best part is sitting in the swivel part and having the whole bus bend around you.
My college years did not include all that many hangovers, but I distinctly remember not enjoying this effect one morning.
One silver lining to the bus being packed is standing with one foot on either side of the articulation pivot. Feeling your stance change under you while you're standing still is neat.
The trains around Munich, Germany were fantastic for that effect. 15+ cars long with wide, open pivots.