Simply type the following at the command line:
pydoc -p 8888
Then point a browser at http://localhost:8888/ to browse interactive documentation for every Python module available on your system.
Is there any reason why such a tool couldn't be made for Perl? What about one relying on only core modules, such that it could go into the core? The main questions I'd have would be the state of pod2html, and how to get a web server without relying on CPAN.
Anyway, it's an idea that might be worth embracing and extending.