Clean, wash and drain the rocket. Roast pine nuts in a pan without fat until golden brown. Remove and put aside. Peel and roughly chop the garlic. Put the rocket, except for something to garnish, olive oil, garlic, parmesan and half of the pine nuts in a mixer and puree finely.
Season with salt and pepper. Drain the shrimps. Cook pasta in boiling salted water according to package instructions. Drain and allow to drain. Mix pasta with pesto and shrimps and arrange on plates.
Garnish with remaining rocket and pine nuts.