Need top 10 gotta' do/see list for Utah & AZ.....

[crop000]

I've never been through Arizona or Utah. I've just started to do a little research. My main goal is to just see the country side. I'll be tent camping. Should be sometime in April or early May 07.
I'm a novice off roader, I will be traveling solo. I'll have about 14 to 18 days round trip from east Texas. Just thought I could gather a good top 10 gotta' do/see list from ya'll. Thanks