If I'd seen The Blues Brothers and Animal House at just the right age (14/15?) I would have loved them and they'd forever have a place in my cinematic heart. But I first saw Blues Brothers at 18/19 (only four years difference, but four very important years when developing music and film taste) and I've never quite loved it. Parts of it are genius, but some bits are dreadful.
With Animal House, I didn't get around to watching until about 30 and I hated it. Truly obnoxious characters doing obnoxious things. I tried to revisit it a few weeks ago, hoping to see something new with fresh eyes - But I switched off after 20 minutes. Can totally see why it would be beloved by someone who saw it in their teens - There's no excuse for liking if it you first saw it over the age of 21.