My Cloistered Cleric Knowledge Devotion abuser had a 2nd level spell which granted +5 to Knowledge checks for 10 min/level, +10 bonus if you followed a god with the Knowledge Domain (hey, what do you know). I pumped all of my skills into Knowledge, and with that +10 bonus, I ended up getting between a +3 and +5 to attack and damage for half an hour a day at level 3. We'd found a +2 mace, and my cleric was the one best suited to use it so, I ended up with a 1d6+2 base, +3 strength, +5 knowledge, +2 Bull Strength, with a total +13 attack bonus,(+13/1d6+12) for several encounters. The barbarian was jealous. DM was thinking of calling shenanigans on it.
My Druid Summoner's critters ended up with ridiculous stats after all the feats too. Like +10 natural armor, fast healing 3, bonuses to grapple, +4 Str/Con, +3 attack, +1d6 cold damage, double duration. For some reason, the DM had no problem with any of this.