Let me start by stating the obvious...Journey Into Imagination is all about the kiddos. But it's sort of a Disney original, so even though the whole thing is very childish and sort of lame, I have to take a ride every time I'm at Epcot.
As I said, this ride is pretty lame. You get into this dumb car and journey into Figment's tripped out imagination. There's some fun effects, but ultimately the entire time I'm riding along I have this dumb smirk on my face. It's like if someone actually sees me on this ride, my reputation is totally ruined. This ride causes you to feel a lot of shame.
When I was kid, however, I loved this ride. Although, I know it was way different when I was younger, so I'm going to maintain that it was way better.
The real beauty of the ride comes after you get out of Figment's Imagination and into their Imagination Stations or whatever the hell they call them. They are fun, even as an adult, although adults will never be able to actually experience them because the little kids are always hogging them. But, they have all of these stations with different fun computer programs that you can play around with. Some play with sound, others with color. Ultimately you could spend hours back there.
If you are a kid 4/5, if you are an adult 1/5. If you are an immature adult, maybe a 2/5.