Q:

Does `Any()` forces linq execution? 

I have a linq to entity query. 
will Any() force linq execution (like ToList()  does)? 

A:

There is very good MSDN article Classification of Standard Query Operators by Manner of Execution which describes all standard operators of LINQ.  As you can see from table Any is executed immediately (as all operators which return single value).  You can always refer this table if you have doubts about manner of operator execution.