Tell me the films which Nick participated in.
select t2.title from film_actor as t1 join film as t2 on t1.film_id = t2.film_id join actor as t3 on t1.actor_id = t3.actor_id where t3.first_name = "NICK"
How many are there?
select count(t2.title) from film_actor as t1 join film as t2 on t1.film_id = t2.film_id join actor as t3 on t1.actor_id = t3.actor_id where t3.first_name = "NICK"
And what is the most popular first name of the actors?
select first_name from actor group by first_name order by count(*) desc limit 1