In my current passport, I have:

Stamps (exit/entry)

Indonesia (8: DPS, CGK)
Thailand (2: BKK)
Singapore (2: SIN)
mainland China (6: KWL, XIY, PVG, Lo Wu, Guangzhou train)
Taiwan ROC (2: TPE)
Hong Kong (at least 24: HKG, boat, train)
Macao (6: boat, MFM)
Japan (9, +1 re-entry permit +1 ward office stamp: NRT, NGO)
Philippines (2: MNL)
Brunei (2: BWN)
South Korea (2: ICN)
Malaysia (8: KUL, BKI)
Cambodia (2: REP)
USA (5?: JFK, EWR, IAD)
Mexico (MEX)
Canada (land crossing at Prescott, Ontario)
Morocco (2, but one was given on the boat from Algeciras, Spain)
Spain (3: MAD, Algeciras)
Gibraltar (2)
England (2?: LHR, LGW)

Visas

Indonesia (4 expired)
mainland China (2 expired)
Hong Kong student (expired)
Cambodia (expired)
Japan student

Less than 2 years old and almost full.

My current passport is a bit depressing, it only has stamps for the Dominican Republic from earlier this year. My last on had a good collection. I had the 24 pg extension added and only had a couple of blanks left when I replaced it.

Hmmm, lets take a look at my passport. I travel quite a bit but tend to go to the same place several times. It's actually quite dull (and I'm sure some of the posts above list everywhere I've been):

Japan
USA
India
Namibia
Fiji
Kenya
Poland

In page order of course.

Thailand
Cambodia
Hong Kong
Bahrain
Jordan
UAE
KSA
Kuwait
Oman
Korea
Indonesia
Phillipines
Singapore
Tonga
New Zealand
Algeria
Eygpt
Angola
South Africa
Poland
Viet Nam
Siapan
Austria?? Wien - Schwechat

A lot of multiple entries and inserts. .

The stamps on mines are too sloppy and sporadic that I'm having a difficult time identifying the countries. :(

Got a new passport less than two years ago and while the old one had done some very extensive travelling the new one has mostly followed me around Europe where they hardly even look at it anymore.

So the only stamps are:
*United States
*Croatia

If I add the number of countries where I have brought that passport but where they didn't stamp anything I can probably add another 15 countries.

Got my passport last December and all I have is:

Italy - Exit Stamp
USA - Entry stamp

*Would have had a France/EU Entry stamp, but the immigration officer didnt stamp my passport.

Amongst many others, I have the following :-

Pakistan (lots)
Tajikistan
Uzbekistan
Morocco
Bulgaria (lots)
Estonia (lots)
Russia (lots)
Latvia
Lituania
China
Laos

Its for this reason I won't be visiting the US anytime soon!

I am falling behind with this passport. I only have around 30 countries in this passport (besides the US stamps). I should ramp up a bit by the end of the year to make up for the "shortfall". :)

Austria that is. Vienna. :)

Be grateful. My intra-europe portion of this RTW got me a heap of stamps, and the occassional question from immigration - "I see on xxx you have a few stamps, and again on xxx [few days later], and more again on xxx". Each country stamps on arrival and departure, and some do on transit also - so they add up very quickly.

When I read this post I thought "At least 12 new countries a year! Thats a lot." Then I realised this is close to the pace needed to visit all the countries in the world, one of my goals.

Doing 12 new countries per year is quite easy for the first few years or so. After you get up to 60 or 70, it's hard to keep adding new ones. At least that is true for me given that I do this all on business travel. I'm getting close to 90 now.

I'm finding its getting harder and I'm up to only about 50.

Then again, distance (and lack of flights to certain parts of the world) also makes it hard from NZ with the need to factor in a day at least each way to most places.