Road Trip Head Ache

[benc]

Hi people,

Me and my girlfriend are planing a trip around south east asia then on to do a trip from one side of america to the other.
This is something we have always wanted to do and are up for anything. The thing is we have seen soooooo many different options of trips that it is all starting to look the same (obviosly they aren't), so i need help.

We are renting an RV in LA and plan to drop it off in New York we are planning for 3 weeks which i think may be enough time??

I initially wanted to go across US 50??? which is dubbed the lonliest road in some web sites and this sounded great!!!

However since talking to a friend he said that going along the south coast via Las VEgas, texas, alabama, new orleans etc then up to Niagr falls would be great!!!

Can anybody suggest a route things to see do....we love american films especially films like Texas Chanisaw Massacre, Cabin Fever....so along the way we would like to pass through very small towns off the beaten track that not many people know about. We would also like to visit a natioanl park or Lakes with camping facilities like is seen in films such as "Cheaper by the dozen 2". These may sound strange requests but hey....too many films for ya!!!

If anyone can give advice or suggested itinary that would be great

Ben