The series finale of Smallville spiked impressively in the ratings Friday night.

The two-hour telecast was seen by 3 million viewers and captured a 1.3 preliminary rating in the adult demo — leaping 63 percent in a single bound from last week. That’s not quite a season high, but it’s the most-watched and highest-rated episode since last fall.

And the night had other finale ratings drama too.

CBS’ Flashpoint (5.7 million, 1.3) jumped 18 percent from last week’s premiere (some viewers probably took a week to realize the low-profile show had returned). The season finale of CSI: NY (10.2 million, 1.5) was steady while Blue Bloods (11.4 million, 1.7) climbed a bit. Though nothing is official yet, Bloods is expected to get a renewal for next season.

ABC’s Shark Tank (5 million, 1.3) climbed for its finale too, sporting its second-largest Friday audience ever.

But NBC’s Friday Night Lights (2.8 million, 0.7) continued to struggle, ranking as the lowest-rated show on broadcast last night and dipping from last week.