Barnyard
http://en.m.wikipedia.org/wiki/Barnyard_(film)
Although generally viewed as The Lion King if Mufasa's death WAS Simba's fault, it was received negative reviews.
However, this is one of the few movies I watched all the time with my (now deceased) grandmother, along with the live-action Garfield movie and the live action Spider-Man. I believe this was one of the last movies we watched together. I won't lie, I'll still turn this movie on every now and then.
Back at the Barnyard
http://en.m.wikipedia.org/wiki/Back_at_the_Barnyard
Created a year after the movie, I watched this show when it first came on, and proceeded to watch it everyday after school. Years later, after the show was cancelled, it was put on Netflix, which is how I managed to get my stepbrother into the series. Plus, watching it again after years was the best.
Does anybody else have some nostalgia with this forgotten franchise?