I've seen web used very effectively before.
Back in 3.0 it covered enought area to "capture" most of a party.
Don't have feather fall? cast web at the bottom of the pit, cliff, chasm, what ever and just jump into it.
In some ways it is better than Wall spells because you just want the opponenets to try and keep coming at you.
Combo it with grease and you hold a person. Grease their weapon. If they drop it they must either a) pick it up and become held fast by the web, or b) ignore it for now and continue to trudge through the web to get at you.
Grease the ground below them. Simple movement requires them to save or fall (iirc) AND they have to make teh STR/Escape artist check to move in the web.
And speaking of grease, it is great just by itself. It's a ranged trip attack and a ranged disarm attack. If you have time to prepare, grease a slope that the bbeg has to come (hopefully running) down.
I saw shatter used as an impromptu KNOCK.
Stone to flesh to make statues become corpses to animate via ANIMATE DEAD.
Use silent image to obscure the sun's real location and make the image of a new sun where ever you want. Make people/groups/armies march in the wrong direction for hours.