Wash both cars every weekend - weather permitting. Includes doorjambs, rockers, weather stripping, and engine compartment. Clean the windows - inside and out - with clear window cleaner.
Wax the wife's Charger every other weekend - the Cruiser once a month.
Clay bar treatment each once in the spring and once in the fall - followed by wax - Meguiar's kit.
Vacuum the entire car (interior, trunk, engine compartment) every weekend.
Clean the wheels with each washing (brake dust is nasty).

Is this obsessive-compulsive?