I love cleaning under fridges. In all my moves that is one of the first things i do.
For one thing, there is so much gross gunk under them that cleaning them is very satisfying. it's also kinda fun to see the weird things you can pull out from previous renters, for example.
I bet you will find strange things under yours, if it's been 8 years!
And for another thing, it makes your unit run so much better and more efficiently (read - green) to clean out the grime bunnies from beneath and the coils.
Unless yours is built in, the unit should slide out easily.