[sunny]

There are a few general pointers I believe can get out most paradigm questions:

Functional
- problem is of a recursive nature
- eg, finding fibonacci numbers: its definition is recursive

Object Oriented
- Suited for real world problems
- When things in the problem can be represented by objects communicating with each other to solve the problem

Logic
- When AI is required
- Expert systems
- This paradigm is obvious when to use

Imperative
- Pretty much anything that doesn't fit into those categories
- The problem can be solved with a series of sequential steps