Userscripts.org

Shows larger version of thumbnails.

Sets guide to open on mouse-over for the experimental layout. Screenshot included.

Makes each thumbnail cycle though that video's 3 thumbnails (optionally: only on mouse hover). Additional feature to view those 3 thumbnails in the top-right (non-animated) on mouse hover.

Enlarges pictures when you roll over them

Shows expandable thumbnail images in imdb as a larger floating preview image on mouse hover.

Shows passwords on mouse hover or focus

Expands any "thumbnail" and "small" images on the page and displays a "large" or "preview" versions on mouse hover in Flickr.

Hover over favorites count in MetaFilter comments to see which users favorited the comment. Minor fixes & enhancements.

Adds hovering info boxes like on the Top Anime/Manga pages

this script does some modifications on 4fuckr.com as you hover the picture thumbnails on the site you will see them in a full size tooltip

Marks Visited Links AND Images for easy recognition.

Preview Finya.de user images without leaving a trace in the "last visited by" section of that user.

Enlarge all XING Profile Images to normal size

Enlarge thumbnails & profile icons on mouse hover. Display pictures in comments directly. Download albums quickly. 滑鼠移入縮圖或個人檔案圖示時放大圖片，直接顯示留言內的圖片連結，快速下載相簿內的圖片。

Auto harvest stock every 5-10 minutes in Facebook Tycoons (http://apps.facebook.com/supertycoons/).

Ika-core.org utilities for Ikariam.

Enlarges actor pictures and film posters in IMDB cast and actor/actress lists on hover.

Expands tiny/small images to their next big size on mouse hover.

Show large image on hover, automatically load more posts at bottom of the page and scroll to the top or bottom of the page with the click of a button.

Displays text on links and custom subreddit icons (e.g. rage faces) that otherwise only appear with a mouseover. This hover text is written to the right of its link/icon in <code> format.

Displays the footnotes in Wikipedia articles when you hover over the numbered superscript for a citation.

For google / bing / yahoo / flickr image search results. Shows the full image on image hover. can re-link or add a link to the images. Click the image if its too big to make it go away.

Zooms hovered images, adds direct links to image and source, and warns of broken images.

Adds customizable links to the reply/edit box on userscripts.org

Provides a thumbnail preview of text links to Flickr photos.

Several customizable options. Special support for Userscripts.org (new interface, fix for pre tags, and allows you to hide the install warning box and footer) Changes text fields, buttons, links, selects, and text areas.

A tooltip pops up when hovering over links.

Altered MrEricSir's script so you get the LARGE not the medium image when you hover.

Allow the user to view linked images directly inside the page.

hover over links for 1.5 seconds to open in a new tab