The best way to see your most frequently used reports is to put them on a Dashboard.   You can create a new Dashboard by clicking Start > Dashboards > New Dashboard.  More information on Dashboards is available on the Knowledge Base.

Dashboards are a great way to see your favourite reports and charts quickly.  In addition, the Summer 2011 release includes the ability to create a saved view of your reports, so you can control which reports appear in which views.  More information on customising the views on Landing Pages can be found here.