After being DM, I got to play for the first time last night. Sagiro was DM. At 5th level, we faced down a shambling mound, a bunch of vine horrors, and four stirges.
Oh my lord, stirges suck.
One stirge in particular decided my dragonborn warlord tasted utterly delicious. He successfully hit me for six rounds in a row. I missed him for five rounds in a row, being unable to roll double digits, but I successfully detached the stinkin' little blood-sucker every time. Then I got eaten by a shambling round while the stirge was still attached. I was only saved by Ashy, who leaped into the shambling mound (athletics vs Fort check) to dump a potion down my throat. I ended the fight down 3 or 4 healing surges, with 5 hit points, and with every power expended except my utility.
It was great.
The two rogues were cackling over on one side of the table, flanking and sneak atacking the same enemy and doing absurd amounts of damage between them. The tiefling warlord and I kept making snarky comments back and forth to one another. And the elven archer would have been much happier if the vines hadn't blinded her.
All in all, at a table with three brand new 4e players and 7 players total, everyone had a whole lot of fun. This makes me happy.