On the spell side of things...
Once you reach 3rd level, Spectral Hand is a must, IMO. Excellent Range, Good duration, hand has nice dodgy AC at early levels, hand is incorporeal, +2 on melee touch attacks, etc. Touch spells also do decent damage now in 3rd edition. Its a one-two punch when combined with rays.
Use the hand from a distance, as they come in closer chuck a ray at 'em.
At 7th combine the above with Evard's and you have a video game mage doing lots of continuous damage. Sorta like soloing on an mmorpg.
Further even, grab Cloudkill (which also bypasses SR) at 9th level and match that with Evard's. A room cleaner.