This was the final episode of Smallville to air on The WB network before The CW's launch on September 18, 2006. The season 6 premiere, "Zod", was the first episode that was released on The CW.
The kiss between Clark and Chloe is chronologically their last; their first kiss would be later shown in "Abyss".
With the "To be continued" credit that ended the previous episode and the "To be continued" credit that ends this one, "Oracle" "Vessel" and "Zod" become the only official 3-part story in the entire series
Like season 4's finale with Batman Begins, this finale featured a 7 minute preview of Superman Returns, which was released later in the summer.
As many viewers are aware, Lex and Clark will battle each other many times in the future, but most of the time with one having the greater advantage. This marks the first time when both of them are evenly matched.