I do, in fact!
it really depends on what area you're talking about and when.
I work in downtown Jersey City, right around Exchange Place... on a Saturday/Sunday morning, you can usually drive straight in and park on the street within 2-3 blocks of the PATH (note, there's a 1-block "no parking" radius around the station). ditto for Grove Street, right down the road.
you could conceivably do the same thing Monday-Friday, but you'd need the appropriate residential sticker (which isn't in effect on weekends). otherwise, you're looking at $15-$25/day for parking depending on the lot.
during the week, I usually just suck it up and walk the 1 mile, or I'll drive to Harrison and pay $7/day for parking if the weather is really terrible.