No. When Q returned to the continuum, he removed Riker's powers.
He may. If he does, he's certainly been keeping it a secret, and has never "weakened" in such a way as to use them to affect the course of events since "Hide and Q" (which has been demonstrated to be about as easy as refraining from eating, drinking, urinating, defectating or breathing). The events of the Star Trek: The Next Generation episode "True Q" may therefore also have included an attempt to expose him. Also, in "Deja Q", Q enigmatically says to Riker "my good fortune is your good fortune," also suggesting this possibility, although this could simply be Q's recognition of his returned ability to bestow the benefit of the "fantasy girls" on Riker. ProfessorTrek 21:27, July 16, 2011 (UTC)
Plus, we know that "Not all the Q are alike...some are almost respectable." (Guinan). Perhaps this means that there are some Q who refrain from the use of their powers.
--ProfessorTrek 06:10, February 4, 2012 (UTC)
I know this is a Necro-answer, but, to correct the professor's assertions, in a later Q episode after "Hide and Q" (I forget which one, but I think it was "Q who") Q specifically asks Riker if he misses the powers, I think that's pretty strong evidence that he doesn't still have them.-Cpthunt (talk) 19:03, October 25, 2016 (UTC)