Filtering a list using items from another list would usually require a developer to use a nested foreach. I'm a big fan of linq for its consise syntax, readability and the functional aspects. The System.Linq .Any() extension method here has parameters IEnumarable and Predicate, however the first argument can be waived if you are passing an unevaluated predicate function.
I was doing some programming for the local zoo today, of course!