He is pretty awesome, but I don't like to jungle him due to health cost of spells (Burning Agony) at early levels. I much prefer to solo top Mundo (starting with regrowth pendant to recover health after Cleavers).

Alittle MR with Mundo goes a long way... i had lux Ahri Nocturne and Morgana a few games ago (we lost 3v5 but thats not the point) and with FON Spirit Visage and a Warmogs with my Burning agony on constantly they only depleted 1/3 of Mundos Hp and after they out ran of skills It was like "Heh... My turn" which quickly turned into a slaughter due to my ultimate if you know mundos limits he is amazing and you just need a little with him to make a solid position on the team See also Malphite.

MUNDO = BOSS
always follows mundos ABC's
Always Be Cleavin