A few weeks ago, Seungri from rival idol group Big Bang ahd confessed in an interview that was a huge fan of Xiah Junsu (even before his debut) and wanted to get closer to him. Junsu called in (recorded) to give him a message!
English Subbed YT video:
Aww~ Seungri is so cute ^-^
While we are on the Big Bang x Junsu topic, check out the Piano Battle Junsu with Taeyang on the December 2008 end of the year show on SBS:
(Seungri had said in an interview later that he had wished to be the one that battled with Junsu on the same stage)