In SharePoint 2007, default list views offer a selector in the top right corner, allowing you to switch between views of a same list:
The view selector is also present in SharePoint 2010, but not as easy to spot as in the previous version. It is actually available in two locations:
– In browse mode: click on the down arrow next to the list/library name
– in the ribbon, under List Tools (or Library Tools)
Hope this helps!