For me the most TV friendly and watchable Pacquiao fight is the first Morales fight. Ironically in his great career the most watchable fight is the defining loss of his career. But so it goes. As for the least watchable fight I'd say it was the second Barrera fight. I saw it once and there's a reason for it. It was a stinker.
If you're talking about most fan friendly I would say Pacquaio vs Hatton. It was a short sweet fight vs a very good opponent. Not a dull moment. Worst was vs Clottey
Morales 1 is probably the most entertaining. Crazy action. I'm with Mosley being the least entertaining. The Floyd fight has some redeeming technical value, and the Clottey fight was an impressive one-sided exhibition; not terribly exciting but better than the Mosley fight. The Mosley fight was full of glove-touching and stutter-step interrupted lunges and Mosley twitching and clinching. No thanks.