Specifically this

Defensive bowling and aggressive field set up rather than the other way round. @glennmcgrath11
Muted celebration after a beast of a delivery
.... #courtneywalsh

57yo at the time this match was played... #courtneywalsh
WPUJC Vaas getting some brilliant shape on the ball here.. What an action...
How does a fast bowler take a c&b like this...
Jimmy anderson.. Elegant, consistent bowling machine
Controversies aside, sreesanth jn his heyday was one of the finest. Look at the seam position. Impeccable
What would chaminda vaas look like if he were 20-25 kmph quicker? Mohammed amir delivering an unplayable one here.. What a lucid action

A lot on this thread is about smooth actions.. Here's daniel vettori... cannot get smoother than this
Straight lines @BrettLee_58... Wait for the slow-mo
Cannot do justice to the ^ tweet without showing a brett lee wicket. Clipped the top of off stump. What a delivery
@IrfanPathan whattay beauty!.. Pendulum swing action and what a yorker!
Another one of @IrfanPathan with a compact punchy action.. Gotta admit - left armers winning on this thread so far..