It was my first Fallout game before I eventually played the older games (which are also good, but obviously different genres as those were isometric games). The DLC was really fun to play and I can't recommend it enough. Operation: Anchorage is probably my number one from that game, but also Mothership Zeta which is a great sort of weird departure from what you'd expect and Point Lookout was really fun to explore too. New Vegas is more cohesive in its DLC, it kinda tries to tie it all into one loose narrative, but I had a wilder time with Fallout 3's almost kind of experimental DLC and I really need to revisit it soon since I'm on a Fallout kick. I miss the Capitol Wasteland and my old PC parts were very much incompatible with the game at the time.

Alright, I'll leave you be now. Just wanted to profess my love for Fallout 3 because it sometimes gets a lot of (sometimes deserved) flak despite being such a fun game.