Patrick Stewart/YMMV

"Stewart: It was a complete accident and... I'm really glad that it happened."
 * And the Fandom Rejoiced: When it was announced he was playing Charles Xavier in the X-Men movie. Fans squeed with delight.
 * And continued when he reprised the role for various games, including X Men Next Dimension, where he was the only cast member to do so.
 * Crowning Moment of Funny: His tale about accidentally feeling up Star Trek the Next Generation co-star Gates McFadden (Beverly Crusher) has to be seen to be believed.

""Because Picard is an infallible source of truth, justice and reason invoking him to prove a point immediately grants credence to your opinion.""
 * His appearance on the Graham Norton Show in 2012 with Liam Neeson in which he spoke of his love for Beavis & Butthead and half-jokingly suggested a live-action version starring the two. Though now He has made us all want to see that. Dammit.
 * Crowning Moment of Heartwarming: This video, in which a Trek fan proposes to his girlfriend at Chicago Comic Con right in front of Sir Patrick, whose reaction must be seen to be believed. What a class act that man is!
 * Hilarious in Hindsight: "But science fiction, I mean why would you want to do science fiction?" -- Patrick Stewart, having a chat with Lalla Ward in 1980.
 * Memetic Mutation: When the Internet started going mainstream and became more accessible, most of the people who began to access it would now be in their 20's or 30's. Those people grew up watching Stewart saving the galaxy as Picard. As such he has now become an icon online with the 'Picard Song' and several demotivational posters of him either showing his approval or disapproval (he's the standard choice of picture for the Face Palm). Knowyourmeme.com put it best when they said:

"D: For a British actor, there's no such thing as slumming above amateur porn, there's only working."
 * So he's become the Anti-Hitler?
 * Values Dissonance: Why he shrugs off the notion of TV as "slumming". British actors don't generally think that way, as ably described by "Furious D" here.