As a tomb king player, a Noble with Hunter's Talon and Pageant of Shrikes scares the heck out of me. It can take out my Casket of Souls, my Hierophant, or really any Priest sitting well, anywhere.
Also, never underestimate their movement. They can have an extra turn of movement in the magic phase, as well as shooting. This means that their chariots can move 8" and then charge another 16 in the magic phase. The same thing goes for flyers and so if he has any big dead birds laying around, Be careful what you deploy in front of them.
On the shooting subject. Their catapults can shoot twice a turn, as well as their archers. This means that a twenty man skeleton unit can put out 40 shots a turn. They always hit on 5+'s so waywatchers/anythingoutintheopen will pretty much die if they shoot at them.
As for magic, they never fail to get a spell off. All of their spells are treated like bound spells and each character besides the BSB can cast a spell or two. I talk up my Casket a lot so that people will dispel it. It goes off on a power level of 2D6 and effects each enemy unit it can see. If I were you, I'd try to move some trees in front of it. You want to dispel his movement and healing spells, not the casket.
Also, watch out for Scorpions. For around 80 points, I can get a S5 T5 A4 W4 killing blow poisoned M7 monster that can come onto the board where ever it wants. A good TK player will take two of them.
Basically takeout to casters first. Go for the Hierophant then Casket dude, and then the guy probably hanging out with the catapult crew. A Hail of Doom Arrow will put a nice dent in a block of skellies or chariots. Wardancers eat skeletons for breakfast. Don't underestimate their shooting and don't underestimate their movement. They will wipe the floor with you in magic, and they can stick around in combat. Just concentrate on one unit at a time, and you'll do fine.
Good Luck
-Tk