Check out Vallecito reservoir just outside Durango, heckuva view and fishing too. Another pretty drive is from near Cortez, head up past Rico to Lizard Head pass, then down to Telluride. From there, head down the canyon around the west end of the Sneffels range, then back to Ridgway. You'll catch the view of Mt. Sneffels mentioned above. Ridgway is a good starting point for several of the scenic drives in the area; you can make a loop of the Ridgway-Ouray-Silverton-Durango-Mesa Verde-Cortez-Lizard Head Pass-Telluride-Ridgway drive.
Another good drive is from Ridgway, go north a couple of miles, then turn east and drive over Owl Creek Pass, to the forks/headwaters of the Cimarron river, and Silver Jack reservoir just below. Parts of True Grit were filmed here; the climax where Rooster Cogburn charges Ned Pepper and gang across the meadow was filmed on the west side of the pass, below Chimney Rock and Courthouse Mountain.
Also, go north from Ridgway to Montrose, then head east to the Black Canyon of the Gunnison river. Pretty amazing view––it ain't the Grand Canyon, but it's 2600 ft deep, and 40 ft across at the bottom at one point.