I have watched Inu Yasha up to about episode 65 or so.
Inu Yasha starts off great, but it hits a rut into its 3rd/4th season. I don't think it ever properly finishes either (the story continues on in the manga). The dub is ... wierd ... its like it was cast by someone who had never seen the original.
However the movies get progressively better.
I think it is worth seeing, but there are other long fighting/adventure series out there that develop better over time. Naruto, Hunter X Hunter and One Piece for instance. Though Naruto goes through patchy filler stages.