Well, something is wrong with that expression. "Most" is used to introduce a comparison, so one finds it near an adjective or adverb. However, "watch" is neither. It could be made into an adjective though by using its participle form "watched" (past participle) or "watching" (present participle). So if we were to try to modify this expression to make it digestible, we could try: "Hollywood's Most Watched Faces" --- the faces people spend most of the time watching or looking at (a rather clumsy utterance though) "Hollywood's Most Watching Faces" --- nah, faces do not really watch, unless one wants to be metaphorical, which I doubt was the case here "Hollywood's Most Watched For Faces" --- faces people search for, but it is a but clumsy as people do not really watch a crowd scanning for faces, which this way of putting suggests "Hollywood's Most Looked/Searched For Faces" --- frankly, this is what I would personally choose, and I suspect was the intended meaning: faces that people most often browse/search/look for "Hollywood's Faces To Watch" --- pretty far off from the original expression, but it is possible: it stands for faces up and coming, maybe young actors that are not yet renown but that the author thinks might have potential Anyway, titles are notoriously difficult to understand because they need to be very concise (use a limited number of characters so they do not take much space while conveying the most) and in doing so they often become ambivalent and even break some grammar rules in the process, which is by the way a tolerated practice in this case.

" To watch" you ask simply means, to keep under attentive view or observation, as in order to see or learn something; view attentively or with interest: to watch a play; to watch a football game. but the meaning written in the sentence is not clear, maybe it's mistyped. "Hollywood Most Watch Faces" I think it must be "Hollywood['S] Most Watch[ED] Faces" here it has the meaning of "interest" and "attentive observation" (taken from http://dictionary.reference.com/)

If you see those faces, it's quite normal that you forget about grammar :)) google the expression ;)

I agree with Green Silence

famous mabye, ones we've watched most