Nowadays I usually only have the time to watch the Celtics but I may catch some sporadic holiday/xmas or playoff games between other teams. I agree with the notion that my second favorite team is any team playing the LA Lakers.
I used to enjoy watching twin towers TD/DR posterize the Pitino Celtics full court press back when the Celtics weren't expected to do much. I enjoyed watching 90's Seattle Supersonic (the best NBA team name) teams with Kemp/Payton/Shremf blow us out also. I liked the Reggie Miller Pacers, Stockton to Malone Jazz. I would watch teams previously mentioned play each other, especially in the playoffs.
Nowadays, theres too much 3 pointers but Zion Williamson the other day was a joy to watch with his great low post moves. I should watch more Pelican games.