Here are some before and after shots of a few things that I have cleaned up recently:

Stockertown: Before - After | Deleted nonexistant roads, cleaned up railroad tracks.

Easton Area: Before - After | Connected new imported data to existing ways for cleaner appearance.

And, of course... I had to mix things up a bit by going out-of-area.

Garden State Parkway: Before - After | Self-exclamatory. The "before" picture is ridiculous.