Healing touch (lv3, Spell Compendium) lets you heal someone else for 1d6/2 levels. You suffer half that as damage
Synostodweomer (lv7, Spell Compendium) lets you heal 1d8/spell level by sacrificing an arcane spell.
Undying vigor of the Dragonlords (lv5, Dragon Magic, Sorc only) lets you heal...