A series of remarkable results - not least home and away to Racing Metro and the quarter-final defeat of four-time champions Toulouse - have taken Edinburgh to within 80 minutes of the May 19 final at Twickenham.
Asked for his stand-out moment thus far, Cross said: "Away at Racing Metro, Phil Godman putting a last-play drop goal over and the guys just going absolutely nuts. It's great to see that sort of emotion and joy.
"It's good to see a squad working together for a common goal and achieving and we're looking to continue to do that against a very strong Ulster team."
Ulster will be without New Zealand international tighthead John Afoa after the prop was banned for a tip tackle during their quarter-final success over Munster.
Even without the All Black, Cross anticipates a physical confrontation from the Irish province.
The Scotland tighthead added: "We've been preparing with an idea in mind that Ulster will find a solution there. They've got a strong squad and a lot of competent players.
"We have no doubt they'll come with a very powerful pack, albeit minus John Afoa.
"The gain line and forward momentum will win or lose this game.
"Ulster are a very large, physical, momentum-based team and if you can stop that momentum, you can create opportunities from that to make space and score against them."
Cross was one of nine Edinburgh players involved in Scotland's 32-14 RBS 6 Nations loss to Ireland at the Aviva Stadium in March and is eager to wipe the game from his memory.
He said: "It's an opportunity to change those memories. We're looking to change them."
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
The All Blacks Performance t-shirt is black with hints of blue from the training jersey. Very Cool.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.