Here are some links to get you started. There is more to come.
Procrastination
Yahoo Group: The Now Habit -- discussing procrastination and ways to overcome it.
Procrastinators Anonymous -- dealing more with procrastination as an addiction.
Yahoo Group: Procrastination -- another place to discuss the dreaded p-word.
Procrastination Research Group -- at the University of Waterloo, Canada.
iProcrastinate Podcasts -- from the Procrastination Research Group.
Planning, Productivity, and Motivation
D*I*Y Planner -- build your own planner!
43 Folders -- popular and informative, with a dash of Mac.
Lifehacker -- tips to improve any and all parts of your life.
wakeuplife.org -- dedicated to improvement through awareness.
Scott H Young -- personal improvement of various flavors.
David Allen's "Getting Things Done" Method
What is GTD? -- a quick explanation from the David Allen Company itself.
Davidco GTD Forums -- one of many places where GTDers hang out.
Yahoo Group: Getting_Things_Done -- yes, more GTDers.
Yahoo Group: AnalogGTD -- GTDers on paper!
Google Group: GTD Tips & Techniques -- GTDers sharing their special secrets.
Pens and Pen Collecting
Pen Collectors of America -- yes, an association of pen collectors.
Zoss Pens E-mail List -- pen discussions by e-mail.
Fountain Pen Network Forums -- discussing collecting and related interests.
Pendemonium -- for all your pen, ink, and writing needs.
His Nibs -- interesting Chinese pens, among others.
PenCity.com -- a place that actually sorts pens by price.
PenHero.com Bookmarks -- more pen links than you can shake a stick at.