Storm Raven, iirc Elrond heals Frodo (in film & book), not Gandalf.
At the Council of Elrond, you find out that Gandalf did cause the lightning at Weathertop. (at least, he says how he fought the Nazgul then).
In the Hobbit, Gandalf kills several goblins with a flash of lightning when the dwarfs are first captured. He also causes the fire in the Great Goblin's hall to go out and the sparks that fly from it strike the goblins and burn them. He magically lights the pinecones when they are hiding in the trees. The flame is magical and burns the wolves more readily and spreads faster than normal fire.
In LOTR, he mentions how wizards can -apparently at will- read the minds of normal folks, change their appearance (illusion) and speak to animals. Gandalf magically lights fire to prevent the Fellowship from freezing on the mountainside, casts the spell which reveals the Ithildin-marked door to Moria. He kills several orcs in Moria with a lightning-like spell, "wizard locks" a door, and fights the balrog. He "awes" Aragorn, Gimli & Legolas when they meet Gandalf the White, he commands Suaron to stay when he would leave, shatters his staff, and he wards off the Nazgul to save Faramir.
He does much more than this as well, but these are some of the more overtly magical incidents fromt he books.
EDIT: Gandalf also knows over 200 spells of opening alone.