Can I input a list of addresses somewhere and retrieve Long/Lat?

This website works as well as any:

http://www.gpsvisualizer.com/geocoder/

I did my address to see what popped up it was off by a whole block or 100 meters or so...

Try both map database selections on the geocoder screen & compare the results. Neither vendor is perfect. For addresses that one map vendor can't find, usually the other one can.

Here is a batch conversion site

http://stevemorse.org/jcal/latlonbatch.html

If Google Maps work ok for you and you have a GoogleMaps API key (free), my Excel add-in will geocode & reverse geocode.

It's not totally automatic but you can record a macro to help you out some.

The dl link is:
http://gpspois.wikispaces.com/Download

I used this one below. It accepts address input as well as point and click. There are many others similar.

http://itouchmap.com/latlong.html-

all of the tools, including mapsource, seem to have accuracy problems involving street numbers. When I search strickly using street numbers, I also assume it will get me close, but I have to finish up the old fashion way and check the street numbers visually.

I found this site to batch geocode for my first try and it worked quite well:

http://www.batchgeocode.com/

I do the following:

* Find the address on Google maps
* Right click on the map and select Center Map Here
* click a bookmark for this: javascript:void(prompt('',gApplication.getMap().getCenter()));

Then a dialog box will come up and give the lat and long for the center of the map that you can copy and paste to notepad, excel, or whatever your favorite POI file editor happens to be.

Edit: oops. I didn't see that you wanted a list to do at once. This will only do one at a time.