If you have XMPCR and an iPOD or other portable MP3 device you can time-shift your favorite XM show. I read an article in USA Today about a software package call TimeTrax. TimeTrax is very helpful in time-shifting your favorite show. So, if you are like me and enjoy late-night talk radio you can record your favorite show(s). Then you can listen to them at a later date. I find it helpful not only for talk radio but also concerts and comedy specials. Now when I travel without my XM radio I have my XM shows and podcast with me.