Q144: besides false life, are there any other arcane spells that give a HP boost?
A144:There is the 4th level
Heart of Earth spell from the
Complete Mage. Twice your CL in temporary HP(max 30), +8 to resist Bull Rush, Overrun, and Trip.
As a swift action you may activate a
Stoneskin effect for 1 round/CL after which the spell ends. 1 hour/ CL duration. Additional bonuses when other "Heart" spells are in effect.
Another 4th level spell,
Ruin Delver's Fortune from the
Spell Compendium lists temporary HP among one of it's options. 4d8 + CHA modifier.
Immediate action casting time, but the duration is only 1d4 rounds.
Then there are the
Vampiric Touch(PHB) and
Channeled Lifetheft(CM) spells which require a melee touch attack on an enemy to gain temporary HP.