It's hard to figure out where to start with this series. Excel Saga really has no plot. It's kind of like Cheers/Seinfeld, but in anime form, and actually funny! Not "haha" funny. It's more like "ROFLMAO" funny! From super cute space bears that turn into creepy old men when killed to hot space chicks that die every five minutes and appear to be brought back to life by...unordinary means, this series had me bent over laughing so hard.
There's plenty of action even though it's pretty much all comedic. Can never really count on the people being killed actually staying dead. The ending throws a little bit of drama into the mix, but then it's right back to ball-busting humor.
Great series that relies on being funny instead of tossing in a lot of fan-service. Recommended for people of all ages.