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"Smallville star Tom Welling has suggested that the CW drama has had its &amp;quot;low moments&amp;quot;. The actor told the Los Angeles Times that the need to delay Clark&amp;#039;s transformation into Superman sometimes stretched credibility. &amp;quot;Each time we got picked up [for a new season] we had to push that finish line further away, and I think we had some low moments when we got too far-fetched,&amp;quot; he admitted Welling also claimed that the series has changed dramatically throughout its ten-year run. &amp;quot;If you look at the series, the first five years were one show and the next five were a different show,&amp;quot; he said. &amp;quot;We could have called [the last five seasons] Metropolis.&amp;quot; He continued: &amp;quot;There were a few times when heroes come in where we allowed ourselves to get lighter. But that&amp;#039;s breaking things up. I don&amp;#039;t think anyone goes out and tries to make mistakes.&amp;quot; Smallville producers Kelly Souders and Brian Peterson recently confirmed that the series finale will mark the beginning of Clark&amp;#039;s time as Superman. The series concludes this Friday at 8/7c on The CW. Watch a teaser trailer for the Smallville series finale below:  "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/tv/smallville/news/a318924/smallville-star-regrets-low-moments/>