Now for a few from the lower end of guitar solos.
Although usually mentioned for his solo on the track "School Days" from the album by the same name, I believe that the solo he (Stanley Clarke) performed on "Duel of the Jester and the Tyrant" intertwined with the solos by Al DiMeola and Chick Corea from Return to Forever's Romantic Warrior is a far better example of emotional bass palying. It is not to be missed!
Jaco Pastorius is considered one of the greatest bass players ever, and he performs a fantastic solo on "Donna Lee" from his self titled album, Jaco Pastorius. If you've ever seen Jaco play, you can see the emotion he puts into what he's doing.
Any martial arts fans out there ought to appreciate the solo that Marcus Miller performs on his album Silver Rain. The track I'm thinking of is "Bruce Lee," and every time I hear it my mind starts alternating between the main fight scene in "Enter the Dragon," and the Crazy 88s coming down the hall in "Kill Bill."
Waymon Tisdale's work on "Get Down On IT" from the CD Way Up is dripping with feeling. I've become a big fan of his lately.
The most emotional bass guitar solo that I can think of though, surely must go to Victor Wooten. It's a number that I first heard and saw on his DVD from Bass Day '98. Luckily, there's a version out on YouTube that I can share with you all. I've included it below. When Victor plays, you can just hear the love pouring out.
Victor's "Amazing Grace"
Now, just so you don't think I forgot about guitars, I'll give you the weirdest guitar solo I can think of. It is during the 21:28 minutes of Steppenwolf's "The Pusher" as captured in a live performance on the CD, Early Steppenwolf.