eighth season
... that during the 2008–2009 television season, the actress Shenae Grimes has starring roles in both the eighth season of Degrassi: The Next Generation, and the first season of 90210?
... that during the <a href="./2008_in_television" id="mwAUs" rel="mw:WikiLink" title="2008 in television">2008</a>–<a href="./2009_in_television" id="mwAUw" rel="mw:WikiLink" title="2009 in television">2009 television season</a>, the actress <a href="./Shenae_Grimes" id="mwAU0" rel="mw:WikiLink" title="Shenae Grimes">Shenae Grimes</a> has starring roles in both the <b id="mwAU4"><a href="./Degrassi:_The_Next_Generation_(season_8)" id="mwAU8" rel="mw:WikiLink" title="Degrassi: The Next Generation (season 8)">eighth season</a></b> of <i id="mwAVA"><a href="./Degrassi:_The_Next_Generation" id="mwAVE" rel="mw:WikiLink" title="Degrassi: The Next Generation">Degrassi: The Next Generation</a></i>, and the first season of <i id="mwAVI"><a href="./90210_(TV_series)" id="mwAVM" rel="mw:WikiLink" title="90210 (TV series)">90210</a></i>?