IMHO, the only trouble with bass solos is that you suddenly loose (and miss) that low-down, rhythmic groove that (with the drums) provides the framework holding the song together. Essentially, the bassist is quitting his/her post and trying to do somebody else's job. To relate this to some of the vid's already posted:
Beck and Miss Wilderbeast = gratuitous musical gymnastics; for most of the time, melodic chords from the keyboard were the only glue holding stuff together (I still wouldn't want to try and ban it tho ).
The Weather Report number left me thinking: "Fabulous stuff, Jaco, but can we have some proper bass underneath that as well please?!"