If you're the type to do multitasking and stuff and/or the type of person who enjoys the benifits of HyperThreading, consider a dualcore processor to be a Hyperthreading-on-steroids processor. Instead of just being able to multitask, now you can get work done in those background threads. People that play around in multimedia, animation and image processing will benifit a lot from this as will those who do lots of statistical analysis and other heavy-math applications