I really thought the addition of the memes into the game were pretty cool.
Dakkamasta 9001: Dats a big numah so its gotta have a lotta dakka.
Chopped Up Armour: Dis looks chopped! I can tells from sum of da hack marks, and from seein' quite a few chops in me time!
Two References to
'DRIVE ME CLOSER!'. The most obvious is the Lord General shouting it and the second is The Colonel's Deathblow (Colonel Nelson of the Krieg 23rd Armoured Regiment was known for pushing his regiment into close combat with the enemy, often closing to point-blank range while waving this sword from the cupola of his command tank. He met his end on Frizzen Prime driving this through an Ork Deff Dread).
Cruel Lightning Claws: A reference to Gorb, a respected member of Relic Forums.
A 'Double Rainbow' reference in Double Shootaz: Double Shootaz all the wayz! Worrr dat's so intense...
Power Klaw references Tenacious D: It haz da powa... ta move you! Into lotsa placez. All at da same time!
Heavy Big Shoota is a 'Meet the Heavy' from TF2 reference: It costs 40 teef to fire dis shoota when yous count ta free. Dat's 'ow many teef rattled outa me mouf when I did it, anyway.
The Catachans make a 'Predator' reference: Go! Run! Get to the Valkyrie.
The final one I've found is when you give normal Guardsmen new equipment, they say, "It's dangerous to go alone! Take this!'