Actually, the MB is fine for those too. If you're heavily using an app in editing like Motion, then a MBP would be a better purchase, although it is do-able with a MB.Unless you're doing a lot of heavy-duty Photo or Video work (Photoshop/Final Cut), the regular MacBook will suit your needs just fine
a powerbook g4 from the refurbished store is loads cheaper than a brand new MB and will handle all of your listed needs perfectly.