If you want those damn annotations to go away at the start of every video, this is the right script for you!
// ==UserScript==// @name Youtube Annotation Destroyer// @namespace http://userscripts.org/users/zackton// @description If you want those damn annotations to go away at the start of every video, this is the right script for you!// @grant GM_log// @include http://www.youtube.com/watch*// @include https://www.youtube.com/watch*// @include http://www.youtube.com/user/*// @include https://www.youtube.com/user/*// @version 1.4// ==/UserScript==Element.prototype.remove = function() {this.parentElement.removeChild(this);};NodeList.prototype.remove = HTMLCollection.prototype.remove = function() {for(var i = 0, len = this.length; i < len; i++) {if(this[i] && this[i].parentElement) {this[i].parentElement.removeChild(this[i]);}}};document.getElementsByClassName('ytp-player-content ytp-iv-player-content').remove();document.getElementsByClassName('video-annotations iv-module')[0].style.display = "none";