do EoE as DK dps, its very easy as unholy - just focus on killing first spark and positioning second spark on top of first. I never try to tank EoE, its very hard as unholy DK since DPSers pull so easy. if you respec frost of course its easier to tank it, but its a lot more fun DPSing on that fight. I pug it and 25 man eoe weekly on my DK.

naxx10/25 is easier to pug as a tank, there are billions of melee that want to pug it and your DK will be one in a sea. I always inspect everyones gear and if anyone is in greens i'm out, if anyone is in mostly blues im out.

os10/25 is also easy to pug, I usually pug 1-2 drakes since you get better drops and more loot. There are more and more 3 drake pugs on my server, at least 5 downed him with zerg strat this weekend.

the hardest part of all of this is just having the achieve first so you can "prove" you know what to do, so just getting it done first time opens a lot of doors, especially as the achievement date goes by. I've got about 1/2 of the 10 and 25 man random achieves (safety dance 8 man maly 2 drake sarth etc) on all my guys and it makes it really easy joining very geared pugs.

Oh, don't pug on fri/sat nights, those tend to be absolutely full of retards. those are nights to go out or watch a movie tuesdays and weds are usually good groups.