Mr Speaker is a developer who writes about JavaScript games, browser tools, ClojureScript, and creative coding experiments.
HN commenters point to his Hacker News bookmarklet as brilliant and indispensable, and cite his Flappy Bird typing tutor and writer-focused syntax highlighting as prior art.
Here are some of the various HN tools and interfaces I have collected over time:
hckr news - http://hckrnews.com/
Sortable HN - http://hnsort.com/
hnvue - http://www.hnvue.com/
HackemUp - http://www.mrspeaker.net/2011/04/11/hackernews-bookmarklet/
Search Y Combinator - http://searchyc.com/
WWHNS (What Would Hacker News Say) - https://github.com/marcua/wwhns/
HNSearch - http://www.hnsearch.com/
Visual Search - http://hnsearch.heroku.com/#h
Hacker News Resources - http://hnresources.com/
Kalimba - http://hn.embed.ly/
The Best of ... Hacker News - http://bitovod.com/hn/best-of
HackRSS - http://www.hackrss.com/
HN Trends - http://hntrends.jerodsanto.net/ ;)
Prior art:
http://www.mrspeaker.net/2012/03/24/syntax-highlighting-for-writers/
http://www.linusakesson.net/programming/syntaxhighlighting/
https://github.com/adib/ColorizeWords
These are all linked to from other comments here. This is not new or unique. Sure, the design is different, and they are probably the first "big" name writing app to include it, but being more popular doesn't mean you invented anything.
Neat AI approach to play it. When this first blew up 5 or so days ago I threw together a simple javascript bookmarklet that played the game at: http://www.mrspeaker.net/dev/game/flappy/
It's really poorly formatted and has unused code in it but it was fun to automate and watch. http://pastebin.com/yTmdWgfC
To use it just install the bookmarklet, click on it and then start the game. Press space to make it die.
I remember someone had made an early iPhone game out of UI elements (around 2009 ish?). I thought it was such a cool idea, and spent a bunch of time messing around with "ui-elements-as-graphics". My favourite thing I came up with was sine-wave scrollbars: https://www.mrspeaker.net/dev/sinescrollbars/
The bookmarklet i use [1], by @mrspeaker is brilliant and does this as well, check it out, i cant use HN without it now.
[1]: http://www.mrspeaker.net/2011/04/11/hackernews-bookmarklet/
The Flappy interface seems to come from http://www.mrspeaker.net/dev/game/flappy/ (the Typing Tutor), but the gameplay is vanilla. Weird.