I'd be interested in knowing what the fares were on some of those interesting itineraries.

My own bit to add: I've got PHX-IAH-CLE-CRW-CLE-PHX coming up. Adding the IAH stop actually made the ticket about 350 instead of about 600.

I was considering a PHX-EWR-IND-EWR-PHX for later in the year (red-eye out) but may have to look into adding a CLE and/or DTW to it!