These are the many styles of the Jeopardy! logo we've seen over the years.
There are two different logo styles, coming down to the font, for the Art Fleming and Alex Trebek versions.
Now let's get down to the nitty gritty.
The logo used for the 1983 pilot using the same logo is Art Fleming's 1978 version.
The logo used for the 1984 pilot.
This is the actual logo of the 1984 pilot. Different font used.
The logo was changed to its current form when the show returned in syndication in 1984 with Alex Trebek hosting. During the first season of the syndicated version, the logo was rotating around a blue globe superimposed on the screen.
In early 1985, the sphere was in light blue and the letters on the sphere became red. This version of the opening lasted into the first two months of the 2nd season.
Shortly after the start of Season 2, the introduction had a white sphere and red letters.
One of many alternate color schemes for the Season 2 Globe, with a red sphere and blue letters.
The globe intro used during the 1st two months of the 3rd season. Yellow letters are on a light blue sphere with black lines divided into squares. It rotates at warp speed.
The globe intro used from November 1986 to July 1991. Yellow letters are on a teal sphere with black lines divided into squares. It rotates at normal speed.
The updated globe intro used during the first 2 seasons with the grid set. A blue sphere with the gold letters spins around slowly and shatters into pieces as the theme music begins.
The 10th Anniversary logo with globe included
The logo used from Season 11 & for the 1st 3 months of Season 13. Similar to that of the UK version. (See International Logos)
This globe alternated with the one from Season 11. This was used from Season 12 (Don't tell Universal Studios about this).
The same logo as it appears on the game board. The original globe intro was retired starting with the debut of the sushi bar set in November 1996.
Season 13 Title Card with a see-through TV-G rating used mostly for Wheel of Fortune. Since November 1996, the title graphic changes with each new season.
Another Season 13 Logo (notice you can see a bit of the sushi bar set) introduced in 1997.
Season 15, similar to Season 9.
The 2nd Season 15 Title Card
Season 16, Notice the First appearance of Jeopardy's question mark.
Season 17, Similar to Season 16.
Season 20 with Anniversary tagline
The 1st Season 21 Title Card
The 2nd Season 21 Title Card has the letters looking golder.
Season 22, The Last Season in Standard Definition TV.
Season 23, The First Season in High Definition TV.
Another Jeopardy! 25th Silver Annivesary logo
Yet Another logo from the 25th Anniversary Season.
Season 26, similar to Season 22
Season 29, similar to Seasons 22, 26, 27 & 28. Does that background remind you of the grid set?
30th Anniversary Season. Notice the revival of the globe intro.
The Season 30 Opening logo, without the "30th Anniversary" byline.
Season 31 Title Card, similar to Season 29 and 30
Season 32 Title Card, with similarities to seasons 25 and 30
Season 33 Title Card. Very similar to Seaosn 31's
Official title card for season 34, similar to Season 23
In the intro starting in the 2nd year of the grid set, while the globe could be seen on the board on camera, it switched to the bumper card as the contestants made their entrance. As Alex made his entrance, the bumper card would "morph" into individual cards into the monitors.
In the 1st year, a portrait of Alex was on the board and would morph into the monitors as he made his entrance, then fade into the logo (either the globe or the tournament logo). For Double Jeopardy!, the card would morph into the monitors as the dollar amounts popped into the screens.