Technically, the 1st IR kiss was between Lucille Ball and Desi Arnaz (1951), then Shatner and France Nuyen (1958), with Shatner and Nichelle Nicols another 4 down the road

Sure thing. From top right, running clockwise:

• Ro Laren from TNG was originally slated to join the cast of DS9, but dropped because of scheduling and/or Berman conflicts. Instead, we were gifted Nana Visitor's character of Kira
• Lucille Ball was on the board of Paramount when other executives tried to axe Trek, but thankfully intervened
• Mustachioed Shatner is not Jim, but rather, his older brother Sam
• Nichelle Nichols was contemplating leaving Trek for the stage, when MLK stepped in and convinced her of the importance of her influence should she stay. We are all the better for that save
• Aragorn with O'Brien head was just a convenient suffering fill-in
• Geneviève Bujold was the initial choice for Janeway, but for "mixed" reasons (Berman), left and Kate Mulgrew stepped in
• Patrick Stewart prepped and portrayed a torture victim for the "Chain of Command " 2 parter, including being fully stripped nude
• Spaced Out is an album featuring the works of Leonard Nimoy and Shatner from the 60's. Beware