There are some "film" group on flickr where you can see pictures taken with it.
I'm administrator of a french one, and force users to tag their pictures with the film used and camera; and then I've created a front-end website to explore the pictures of the group: http://www.e-cerveau.com/argentique/
It's in french, but go to the "Films" page, choose a film in "Noir et Blanc" (black and white) or "Couleur" (color) and then click on the link "Voir les X photos prises avec ce film" (view the X pictures taken with this film").
However, as you said you just want to figure out the difference between films only without much influence of the camera, developpement... I think it's impossible. Because:
- a film will not give the same result in 24x36 or in medium format (6x6; 7x6),...
- the camera / lens will change the result (chromatic aberration,...)
- the way the photograph used the film will change the result (some photograph always shoot at a lower iso speed than the one specified on the film; by example shoot at 50iso instead of 100iso for a 100 iso film)
- the way how the film is developped (chimichal product, time,...) into a negative will change the contrast, ...
- the way how the negative is developped into a photo, the paper used,... will change the final result
All this is the part of the photographic process, and the developpement is a really import part in which one there a big part of "interpretation" (as you can do in Adobe Lightroom).
And the most important part is : you want to see that on the web which implied a scanning process of the final paper photo, or the negative. After scanning, we generaly post process the numerical photo, to readjust contract etc... (because a scanner will interpret what it have seen).
So you must try the films yourself.